99090424 has 16 divisors (see below), whose sum is σ = 186001200. Its totient is φ = 49490112.

The previous prime is 99090401. The next prime is 99090427. The reversal of 99090424 is 42409099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99090427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332 + ... + 14140.

It is an arithmetic number, because the mean of its divisors is an integer number (11625075).

Almost surely, 2^99090424 is an apocalyptic number.

It is an amenable number.

99090424 is a deficient number, since it is larger than the sum of its proper divisors (86910776).

99090424 is a wasteful number, since it uses less digits than its factorization.

99090424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13782 (or 13778 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 99090424 is about 9954.4173109228. The cubic root of 99090424 is about 462.7473022684.

The spelling of 99090424 in words is "ninety-nine million, ninety thousand, four hundred twenty-four".