99715442 has 18 divisors (see below), whose sum is σ = 156870063. Its totient is φ = 47534652.

The previous prime is 99715397. The next prime is 99715457. The reversal of 99715442 is 24451799.

It can be written as a sum of positive squares in only one way, i.e., 49857721 + 49857721 = 7061^2 + 7061^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=7061.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99715442.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 324653 + ... + 324959.

Almost surely, 2^99715442 is an apocalyptic number.

99715442 is a deficient number, since it is larger than the sum of its proper divisors (57154621).

99715442 is an equidigital number, since it uses as much as digits as its factorization.

99715442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 332 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 99715442 is about 9985.7619639164. The cubic root of 99715442 is about 463.7181980163.

The spelling of 99715442 in words is "ninety-nine million, seven hundred fifteen thousand, four hundred forty-two".