9976938615 has 64 divisors (see below), whose sum is σ = 20291281920. Its totient is φ = 4556234880.

The previous prime is 9976938547. The next prime is 9976938617. The reversal of 9976938615 is 5168396799.

9976938615 is a `hidden beast` number, since 9 + 9 + 7 + 6 + 9 + 3 + 8 + 615 = 666.

It is not a de Polignac number, because 9976938615 - 2⁷ = 9976938487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9976938617) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1026157 + ... + 1035833.

It is an arithmetic number, because the mean of its divisors is an integer number (317051280).

Almost surely, 2^9976938615 is an apocalyptic number.

9976938615 is an abundant number, since it is smaller than the sum of its proper divisors (10314343305).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9976938615 is a wasteful number, since it uses less digits than its factorization.

9976938615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10789 (or 10783 counting only the distinct ones).

The product of its digits is 22044960, while the sum is 63.

The square root of 9976938615 is about 99884.6265198003. The cubic root of 9976938615 is about 2152.7772737062. Note that the first 3 decimals are identical.

It can be divided in two parts, 99769 and 38615, that added together give a square (138384 = 372²).

The spelling of 9976938615 in words is "nine billion, nine hundred seventy-six million, nine hundred thirty-eight thousand, six hundred fifteen".