97399986841 has 4 divisors (see below), whose sum is σ = 97400648884. Its totient is φ = 97399324800.

The previous prime is 97399986823. The next prime is 97399986883. The reversal of 97399986841 is 14868999379.

It is a happy number.

97399986841 is nontrivially palindromic in base 8.

97399986841 is a nontrivial binomial coefficient, being equal to C(441362, 2).

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 84450684816 + 12949302025 = 290604^2 + 113795^2 .

It is a 3-Lehmer number, since φ(97399986841) divides (97399986841-1)³.

It is a cyclic number.

It is not a de Polignac number, because 97399986841 - 2⁵ = 97399986809 is a prime.

It is a deceptive number, since it divides R_97399986840.

It is not an unprimeable number, because it can be changed into a prime (97399986941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 441361.

It is an arithmetic number, because the mean of its divisors is an integer number (24350162221).

It is a Poulet number, since it divides 2^97399986840-1.

Almost surely, 2^97399986841 is an apocalyptic number.

97399986841 is the 441361-st triangular number and also the 220681-st hexagonal number.

97399986841 is the 147121-st centered nonagonal number.

It is an amenable number.

97399986841 is a deficient number, since it is larger than the sum of its proper divisors (662043).

97399986841 is a wasteful number, since it uses less digits than its factorization.

97399986841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662042.

The product of its digits is 211631616, while the sum is 73.

The spelling of 97399986841 in words is "ninety-seven billion, three hundred ninety-nine million, nine hundred eighty-six thousand, eight hundred forty-one".