91045964 has 24 divisors (see below), whose sum is σ = 168666960. Its totient is φ = 42928704.

The previous prime is 91045963. The next prime is 91045987. The reversal of 91045964 is 46954019.

It is not an unprimeable number, because it can be changed into a prime (91045961) 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 in 7 ways as a sum of consecutive naturals, for example, 4139 + ... + 14114.

It is an arithmetic number, because the mean of its divisors is an integer number (7027790).

Almost surely, 2^91045964 is an apocalyptic number.

It is an amenable number.

91045964 is a deficient number, since it is larger than the sum of its proper divisors (77620996).

91045964 is a wasteful number, since it uses less digits than its factorization.

91045964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18329 (or 18327 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 91045964 is about 9541.8008782410. The cubic root of 91045964 is about 449.8698619567.

The spelling of 91045964 in words is "ninety-one million, forty-five thousand, nine hundred sixty-four".