91478488 has 16 divisors (see below), whose sum is σ = 171639360. Its totient is φ = 45708000.

The previous prime is 91478461. The next prime is 91478531. The reversal of 91478488 is 88487419.

It is a super-2 number, since 2×91478488² = 16736627533532288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12678 + ... + 18538.

It is an arithmetic number, because the mean of its divisors is an integer number (10727460).

Almost surely, 2^91478488 is an apocalyptic number.

It is an amenable number.

91478488 is a deficient number, since it is larger than the sum of its proper divisors (80160872).

91478488 is a wasteful number, since it uses less digits than its factorization.

91478488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7818 (or 7814 counting only the distinct ones).

The product of its digits is 516096, while the sum is 49.

The square root of 91478488 is about 9564.4387185030. The cubic root of 91478488 is about 450.5811224761.

The spelling of 91478488 in words is "ninety-one million, four hundred seventy-eight thousand, four hundred eighty-eight".