9976499136 has 252 divisors, whose sum is σ = 31015210512. Its totient is φ = 3177833472.

The previous prime is 9976499131. The next prime is 9976499161. The reversal of 9976499136 is 6319946799.

9976499136 is a `hidden beast` number, since 9 + 9 + 7 + 6 + 499 + 136 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9976499131) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9657276 + ... + 9658308.

Almost surely, 2^9976499136 is an apocalyptic number.

9976499136 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9976499136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15507605256).

9976499136 is an abundant number, since it is smaller than the sum of its proper divisors (21038711376).

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

9976499136 is an equidigital number, since it uses as much as digits as its factorization.

9976499136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092 (or 1061 counting only the distinct ones).

The product of its digits is 19840464, while the sum is 63.

The square root of 9976499136 is about 99882.4265624339. The cubic root of 9976499136 is about 2152.7456636659.

The spelling of 9976499136 in words is "nine billion, nine hundred seventy-six million, four hundred ninety-nine thousand, one hundred thirty-six".