99902438 has 8 divisors (see below), whose sum is σ = 158668632. Its totient is φ = 47012896.

The previous prime is 99902393. The next prime is 99902441. The reversal of 99902438 is 83420999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1469120 + ... + 1469187.

It is an arithmetic number, because the mean of its divisors is an integer number (19833579).

Almost surely, 2^99902438 is an apocalyptic number.

99902438 is a deficient number, since it is larger than the sum of its proper divisors (58766194).

99902438 is a wasteful number, since it uses less digits than its factorization.

99902438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938326.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 99902438 is about 9995.1207096263. The cubic root of 99902438 is about 464.0078866822.

The spelling of 99902438 in words is "ninety-nine million, nine hundred two thousand, four hundred thirty-eight".