91274406 has 16 divisors (see below), whose sum is σ = 182817648. Its totient is φ = 30380000.

The previous prime is 91274401. The next prime is 91274441. The reversal of 91274406 is 60447219.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91274401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6645 + ... + 15056.

It is an arithmetic number, because the mean of its divisors is an integer number (11426103).

Almost surely, 2^91274406 is an apocalyptic number.

91274406 is an abundant number, since it is smaller than the sum of its proper divisors (91543242).

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

91274406 is a wasteful number, since it uses less digits than its factorization.

91274406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22407.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 91274406 is about 9553.7639702894. The cubic root of 91274406 is about 450.2458015149.

The spelling of 91274406 in words is "ninety-one million, two hundred seventy-four thousand, four hundred six".