981402841 has 4 divisors (see below), whose sum is σ = 982376500. Its totient is φ = 980429184.

The previous prime is 981402827. The next prime is 981402881. The reversal of 981402841 is 148204189.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 404010000 + 577392841 = 20100^2 + 24029^2 .

It is a cyclic number.

It is not a de Polignac number, because 981402841 - 2¹⁷ = 981271769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 981402841.

It is not an unprimeable number, because it can be changed into a prime (981402811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485316 + ... + 487333.

It is an arithmetic number, because the mean of its divisors is an integer number (245594125).

Almost surely, 2^981402841 is an apocalyptic number.

It is an amenable number.

981402841 is a deficient number, since it is larger than the sum of its proper divisors (973659).

981402841 is a wasteful number, since it uses less digits than its factorization.

981402841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973658.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 981402841 is about 31327.3497283125. The cubic root of 981402841 is about 993.7621167200.

The spelling of 981402841 in words is "nine hundred eighty-one million, four hundred two thousand, eight hundred forty-one".