91427900 has 18 divisors (see below), whose sum is σ = 198398760. Its totient is φ = 36571120.

The previous prime is 91427899. The next prime is 91427911. The reversal of 91427900 is 972419.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 457040 + ... + 457239.

Almost surely, 2^91427900 is an apocalyptic number.

It is an amenable number.

91427900 is an abundant number, since it is smaller than the sum of its proper divisors (106970860).

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

91427900 is a wasteful number, since it uses less digits than its factorization.

91427900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914293 (or 914286 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 91427900 is about 9561.7937647703. The cubic root of 91427900 is about 450.4980493904.

The spelling of 91427900 in words is "ninety-one million, four hundred twenty-seven thousand, nine hundred".