91587412 has 12 divisors (see below), whose sum is σ = 183174880. Its totient is φ = 39251736.

The previous prime is 91587371. The next prime is 91587421. The reversal of 91587412 is 21478519.

91587412 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 1635462 + ... + 1635517.

Almost surely, 2^91587412 is an apocalyptic number.

It is an amenable number.

91587412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

91587412 is a wasteful number, since it uses less digits than its factorization.

91587412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3270990 (or 3270988 counting only the distinct ones).

The product of its digits is 20160, while the sum is 37.

The square root of 91587412 is about 9570.1312425692. The cubic root of 91587412 is about 450.7598881165.

The spelling of 91587412 in words is "ninety-one million, five hundred eighty-seven thousand, four hundred twelve".