99970992 has 60 divisors (see below), whose sum is σ = 305219304. Its totient is φ = 30293760.

The previous prime is 99970979. The next prime is 99970993. The reversal of 99970992 is 29907999.

It is not an unprimeable number, because it can be changed into a prime (99970993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29973 + ... + 33140.

Almost surely, 2^99970992 is an apocalyptic number.

It is an amenable number.

99970992 is an abundant number, since it is smaller than the sum of its proper divisors (205248312).

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

99970992 is a wasteful number, since it uses less digits than its factorization.

99970992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63138 (or 63129 counting only the distinct ones).

The product of its (nonzero) digits is 826686, while the sum is 54.

The square root of 99970992 is about 9998.5494948017. The cubic root of 99970992 is about 464.1139979512.

The spelling of 99970992 in words is "ninety-nine million, nine hundred seventy thousand, nine hundred ninety-two".