90391124 has 12 divisors (see below), whose sum is σ = 158816448. Its totient is φ = 45015000.

The previous prime is 90391123. The next prime is 90391153. The reversal of 90391124 is 42119309.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90391123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44012 + ... + 46019.

It is an arithmetic number, because the mean of its divisors is an integer number (13234704).

Almost surely, 2^90391124 is an apocalyptic number.

It is an amenable number.

90391124 is a deficient number, since it is larger than the sum of its proper divisors (68425324).

90391124 is a wasteful number, since it uses less digits than its factorization.

90391124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90286 (or 90284 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 90391124 is about 9507.4246775875. The cubic root of 90391124 is about 448.7887161244.

The spelling of 90391124 in words is "ninety million, three hundred ninety-one thousand, one hundred twenty-four".