91027964 has 12 divisors (see below), whose sum is σ = 161543088. Its totient is φ = 44872800.

The previous prime is 91027957. The next prime is 91027991. The reversal of 91027964 is 46972019.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159977 + ... + 160544.

It is an arithmetic number, because the mean of its divisors is an integer number (13461924).

Almost surely, 2^91027964 is an apocalyptic number.

It is an amenable number.

91027964 is a deficient number, since it is larger than the sum of its proper divisors (70515124).

91027964 is a wasteful number, since it uses less digits than its factorization.

91027964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320596 (or 320594 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 91027964 is about 9540.8576134434. The cubic root of 91027964 is about 449.8402132282.

The spelling of 91027964 in words is "ninety-one million, twenty-seven thousand, nine hundred sixty-four".