99691942 has 16 divisors (see below), whose sum is σ = 171892512. Its totient is φ = 42477120.

The previous prime is 99691903. The next prime is 99691967. The reversal of 99691942 is 24919699.

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, 18159 + ... + 23002.

It is an arithmetic number, because the mean of its divisors is an integer number (10743282).

Almost surely, 2^99691942 is an apocalyptic number.

99691942 is a deficient number, since it is larger than the sum of its proper divisors (72200570).

99691942 is a wasteful number, since it uses less digits than its factorization.

99691942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41343.

The product of its digits is 314928, while the sum is 49.

The square root of 99691942 is about 9984.5852192267. The cubic root of 99691942 is about 463.6817669026.

It can be divided in two parts, 9969 and 1942, that added together give a palindrome (11911).

The spelling of 99691942 in words is "ninety-nine million, six hundred ninety-one thousand, nine hundred forty-two".