90944091 has 12 divisors (see below), whose sum is σ = 150130032. Its totient is φ = 51968016.

The previous prime is 90944071. The next prime is 90944141. The reversal of 90944091 is 19044909.

It is not a de Polignac number, because 90944091 - 2⁵ = 90944059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90944071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 721716 + ... + 721841.

It is an arithmetic number, because the mean of its divisors is an integer number (12510836).

Almost surely, 2^90944091 is an apocalyptic number.

90944091 is a deficient number, since it is larger than the sum of its proper divisors (59185941).

90944091 is a wasteful number, since it uses less digits than its factorization.

90944091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443570 (or 1443567 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 90944091 is about 9536.4611360819. The cubic root of 90944091 is about 449.7020101221.

The spelling of 90944091 in words is "ninety million, nine hundred forty-four thousand, ninety-one".