99188742 has 16 divisors (see below), whose sum is σ = 207002880. Its totient is φ = 31625352.

The previous prime is 99188737. The next prime is 99188807. The reversal of 99188742 is 24788199.

It is a junction number, because it is equal to n+sod(n) for n = 99188691 and 99188700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359242 + ... + 359517.

It is an arithmetic number, because the mean of its divisors is an integer number (12937680).

Almost surely, 2^99188742 is an apocalyptic number.

99188742 is an abundant number, since it is smaller than the sum of its proper divisors (107814138).

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

99188742 is a wasteful number, since it uses less digits than its factorization.

99188742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718787.

The product of its digits is 290304, while the sum is 48.

The square root of 99188742 is about 9959.3544971549. The cubic root of 99188742 is about 462.9002983854.

The spelling of 99188742 in words is "ninety-nine million, one hundred eighty-eight thousand, seven hundred forty-two".