91240464 has 40 divisors (see below), whose sum is σ = 269377600. Its totient is φ = 26068608.

The previous prime is 91240447. The next prime is 91240469. The reversal of 91240464 is 46404219.

It is not an unprimeable number, because it can be changed into a prime (91240469) 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, 135439 + ... + 136110.

It is an arithmetic number, because the mean of its divisors is an integer number (6734440).

Almost surely, 2^91240464 is an apocalyptic number.

It is an amenable number.

91240464 is an abundant number, since it is smaller than the sum of its proper divisors (178137136).

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

91240464 is a wasteful number, since it uses less digits than its factorization.

91240464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271567 (or 271561 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 91240464 is about 9551.9874371777. The cubic root of 91240464 is about 450.1899839776.

The spelling of 91240464 in words is "ninety-one million, two hundred forty thousand, four hundred sixty-four".