91477420 has 12 divisors (see below), whose sum is σ = 192102624. Its totient is φ = 36590960.

The previous prime is 91477411. The next prime is 91477427. The reversal of 91477420 is 2477419.

It is not an unprimeable number, because it can be changed into a prime (91477427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2286916 + ... + 2286955.

It is an arithmetic number, because the mean of its divisors is an integer number (16008552).

Almost surely, 2^91477420 is an apocalyptic number.

It is an amenable number.

91477420 is an abundant number, since it is smaller than the sum of its proper divisors (100625204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91477420 is a wasteful number, since it uses less digits than its factorization.

91477420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4573880 (or 4573878 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 91477420 is about 9564.3828865223. The cubic root of 91477420 is about 450.5793689764.

The spelling of 91477420 in words is "ninety-one million, four hundred seventy-seven thousand, four hundred twenty".