90469971 has 48 divisors (see below), whose sum is σ = 147723264. Its totient is φ = 53044992.

The previous prime is 90469949. The next prime is 90469999. The reversal of 90469971 is 17996409.

It is not a de Polignac number, because 90469971 - 2⁷ = 90469843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90469271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 165120 + ... + 165666.

It is an arithmetic number, because the mean of its divisors is an integer number (3077568).

Almost surely, 2^90469971 is an apocalyptic number.

90469971 is a deficient number, since it is larger than the sum of its proper divisors (57253293).

90469971 is a wasteful number, since it uses less digits than its factorization.

90469971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 90469971 is about 9511.5703750748. The cubic root of 90469971 is about 448.9191690513.

The spelling of 90469971 in words is "ninety million, four hundred sixty-nine thousand, nine hundred seventy-one".