97998689979 has 12 divisors (see below), whose sum is σ = 141610249456. Its totient is φ = 65306343312.

The previous prime is 97998689951. The next prime is 97998689989.

It is a happy number.

97998689979 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 97998689979 - 2⁵ = 97998689947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97998689989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2152612 + ... + 2197665.

Almost surely, 2^97998689979 is an apocalyptic number.

97998689979 is a deficient number, since it is larger than the sum of its proper divisors (43611559477).

97998689979 is a wasteful number, since it uses less digits than its factorization.

97998689979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4352786 (or 4352783 counting only the distinct ones).

The product of its digits is 9999593856, while the sum is 90.

The spelling of 97998689979 in words is "ninety-seven billion, nine hundred ninety-eight million, six hundred eighty-nine thousand, nine hundred seventy-nine".