90470871 has 32 divisors (see below), whose sum is σ = 137142720. Its totient is φ = 58931712.

The previous prime is 90470843. The next prime is 90470893. The reversal of 90470871 is 17807409.

It is not a de Polignac number, because 90470871 - 2²³ = 82082263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90470371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 388171 + ... + 388403.

It is an arithmetic number, because the mean of its divisors is an integer number (4285710).

Almost surely, 2^90470871 is an apocalyptic number.

90470871 is a deficient number, since it is larger than the sum of its proper divisors (46671849).

90470871 is a wasteful number, since it uses less digits than its factorization.

90470871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 90470871 is about 9511.6176857567. The cubic root of 90470871 is about 448.9206576701.

The spelling of 90470871 in words is "ninety million, four hundred seventy thousand, eight hundred seventy-one".