90979444 has 24 divisors (see below), whose sum is σ = 175912128. Its totient is φ = 40951680.

The previous prime is 90979439. The next prime is 90979453. The reversal of 90979444 is 44497909.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a junction number, because it is equal to n+sod(n) for n = 90979394 and 90979403.

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, 27522 + ... + 30649.

It is an arithmetic number, because the mean of its divisors is an integer number (7329672).

Almost surely, 2^90979444 is an apocalyptic number.

It is an amenable number.

90979444 is a deficient number, since it is larger than the sum of its proper divisors (84932684).

90979444 is a wasteful number, since it uses less digits than its factorization.

90979444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58215 (or 58213 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 90979444 is about 9538.3145261624. The cubic root of 90979444 is about 449.7602739608.

The spelling of 90979444 in words is "ninety million, nine hundred seventy-nine thousand, four hundred forty-four".