99990976 has 14 divisors (see below), whose sum is σ = 198419720. Its totient is φ = 49995456.

The previous prime is 99990973. The next prime is 99991009. The reversal of 99990976 is 67909999.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 99990976.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99990971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 781116 + ... + 781243.

Almost surely, 2^99990976 is an apocalyptic number.

It is an amenable number.

99990976 is a deficient number, since it is larger than the sum of its proper divisors (98428744).

99990976 is a wasteful number, since it uses less digits than its factorization.

99990976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562371 (or 1562361 counting only the distinct ones).

The product of its (nonzero) digits is 2480058, while the sum is 58.

The square root of 99990976 is about 9999.5487898205. The cubic root of 99990976 is about 464.1449210421.

The spelling of 99990976 in words is "ninety-nine million, nine hundred ninety thousand, nine hundred seventy-six".