90979942 has 12 divisors (see below), whose sum is σ = 144031716. Its totient is φ = 43095420.

The previous prime is 90979939. The next prime is 90979949. The reversal of 90979942 is 24997909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90979949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62284 + ... + 63727.

It is an arithmetic number, because the mean of its divisors is an integer number (12002643).

Almost surely, 2^90979942 is an apocalyptic number.

90979942 is a deficient number, since it is larger than the sum of its proper divisors (53051774).

90979942 is a wasteful number, since it uses less digits than its factorization.

90979942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126051 (or 126032 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 49.

The square root of 90979942 is about 9538.3406313677. The cubic root of 90979942 is about 449.7610945865.

The spelling of 90979942 in words is "ninety million, nine hundred seventy-nine thousand, nine hundred forty-two".