91400464 has 10 divisors (see below), whose sum is σ = 177088430. Its totient is φ = 45700224.

The previous prime is 91400447. The next prime is 91400467. The reversal of 91400464 is 46400419.

It can be written as a sum of positive squares in only one way, i.e., 88510464 + 2890000 = 9408^2 + 1700^2 .

It is not an unprimeable number, because it can be changed into a prime (91400467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2856249 + ... + 2856280.

It is an arithmetic number, because the mean of its divisors is an integer number (17708843).

Almost surely, 2^91400464 is an apocalyptic number.

It is an amenable number.

91400464 is a deficient number, since it is larger than the sum of its proper divisors (85687966).

91400464 is a wasteful number, since it uses less digits than its factorization.

91400464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5712537 (or 5712531 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 91400464 is about 9560.3589890757. The cubic root of 91400464 is about 450.4529825453.

The spelling of 91400464 in words is "ninety-one million, four hundred thousand, four hundred sixty-four".