91160400 has 60 divisors (see below), whose sum is σ = 292020992. Its totient is φ = 24309120.

The previous prime is 91160389. The next prime is 91160437. The reversal of 91160400 is 406119.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36784 + ... + 39183.

Almost surely, 2^91160400 is an apocalyptic number.

It is an amenable number.

91160400 is an abundant number, since it is smaller than the sum of its proper divisors (200860592).

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

91160400 is a wasteful number, since it uses less digits than its factorization.

91160400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75988 (or 75977 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 91160400 is about 9547.7955570907. The cubic root of 91160400 is about 450.0582640608.

Adding to 91160400 its reverse (406119), we get a palindrome (91566519).

The spelling of 91160400 in words is "ninety-one million, one hundred sixty thousand, four hundred".