99682957397 has 4 divisors (see below), whose sum is σ = 99683604876. Its totient is φ = 99682309920.

The previous prime is 99682957393. The next prime is 99682957403. The reversal of 99682957397 is 79375928699.

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 82718936881 + 16964020516 = 287609^2 + 130246^2 .

It is a cyclic number.

It is not a de Polignac number, because 99682957397 - 2² = 99682957393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99682957391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54497 + ... + 449817.

It is an arithmetic number, because the mean of its divisors is an integer number (24920901219).

Almost surely, 2^99682957397 is an apocalyptic number.

It is an amenable number.

99682957397 is a deficient number, since it is larger than the sum of its proper divisors (647479).

99682957397 is a wasteful number, since it uses less digits than its factorization.

99682957397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647478.

The product of its digits is 462944160, while the sum is 74.

The spelling of 99682957397 in words is "ninety-nine billion, six hundred eighty-two million, nine hundred fifty-seven thousand, three hundred ninety-seven".