99915942 has 16 divisors (see below), whose sum is σ = 228379392. Its totient is φ = 28547400.

The previous prime is 99915941. The next prime is 99915943. The reversal of 99915942 is 24951999.

It is an interprime number because it is at equal distance from previous prime (99915941) and next prime (99915943).

It is a junction number, because it is equal to n+sod(n) for n = 99915891 and 99915900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99915941) 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, 1189434 + ... + 1189517.

It is an arithmetic number, because the mean of its divisors is an integer number (14273712).

Almost surely, 2^99915942 is an apocalyptic number.

99915942 is an abundant number, since it is smaller than the sum of its proper divisors (128463450).

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

99915942 is a wasteful number, since it uses less digits than its factorization.

99915942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378963.

The product of its digits is 262440, while the sum is 48.

The square root of 99915942 is about 9995.7962164102. The cubic root of 99915942 is about 464.0287926792.

The spelling of 99915942 in words is "ninety-nine million, nine hundred fifteen thousand, nine hundred forty-two".