9977908797 has 24 divisors (see below), whose sum is σ = 14710026240. Its totient is φ = 6515964000.

The previous prime is 9977908793. The next prime is 9977908861. The reversal of 9977908797 is 7978097799.

It is not a de Polignac number, because 9977908797 - 2² = 9977908793 is a prime.

It is a super-2 number, since 2×9977908797² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9977908793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35047 + ... + 145547.

It is an arithmetic number, because the mean of its divisors is an integer number (612917760).

Almost surely, 2^9977908797 is an apocalyptic number.

It is an amenable number.

9977908797 is a deficient number, since it is larger than the sum of its proper divisors (4732117443).

9977908797 is a wasteful number, since it uses less digits than its factorization.

9977908797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110713 (or 110710 counting only the distinct ones).

The product of its (nonzero) digits is 126023688, while the sum is 72.

The square root of 9977908797 is about 99889.4829148695. The cubic root of 9977908797 is about 2152.8470518932.

The spelling of 9977908797 in words is "nine billion, nine hundred seventy-seven million, nine hundred eight thousand, seven hundred ninety-seven".