99902412 has 18 divisors (see below), whose sum is σ = 252531188. Its totient is φ = 33300792.

The previous prime is 99902393. The next prime is 99902441. The reversal of 99902412 is 21420999.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2775067 = 99902412 / (9 + 9 + 9 + 0 + 2 + 4 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1387498 + ... + 1387569.

Almost surely, 2^99902412 is an apocalyptic number.

It is an amenable number.

99902412 is an abundant number, since it is smaller than the sum of its proper divisors (152628776).

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

99902412 is a wasteful number, since it uses less digits than its factorization.

99902412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775077 (or 2775072 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 99902412 is about 9995.1194089916. The cubic root of 99902412 is about 464.0078464289.

The spelling of 99902412 in words is "ninety-nine million, nine hundred two thousand, four hundred twelve".