99995980 has 24 divisors (see below), whose sum is σ = 239990688. Its totient is φ = 34284288.

The previous prime is 99995957. The next prime is 99995983. The reversal of 99995980 is 8959999.

It is not an unprimeable number, because it can be changed into a prime (99995983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356989 + ... + 357268.

It is an arithmetic number, because the mean of its divisors is an integer number (9999612).

Almost surely, 2^99995980 is an apocalyptic number.

It is an amenable number.

99995980 is an abundant number, since it is smaller than the sum of its proper divisors (139994708).

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

99995980 is a wasteful number, since it uses less digits than its factorization.

99995980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714273 (or 714271 counting only the distinct ones).

The product of its (nonzero) digits is 2361960, while the sum is 58.

The square root of 99995980 is about 9999.7989979799. The cubic root of 99995980 is about 464.1526635489.

The spelling of 99995980 in words is "ninety-nine million, nine hundred ninety-five thousand, nine hundred eighty".