91536404 has 6 divisors (see below), whose sum is σ = 160188714. Its totient is φ = 45768200.

The previous prime is 91536391. The next prime is 91536407. The reversal of 91536404 is 40463519.

It can be written as a sum of positive squares in only one way, i.e., 91164304 + 372100 = 9548^2 + 610^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91536407) by changing a digit.

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 as a sum of consecutive naturals, namely, 11442047 + ... + 11442054.

It is an arithmetic number, because the mean of its divisors is an integer number (26698119).

Almost surely, 2^91536404 is an apocalyptic number.

It is an amenable number.

91536404 is a deficient number, since it is larger than the sum of its proper divisors (68652310).

91536404 is a wasteful number, since it uses less digits than its factorization.

91536404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22884105 (or 22884103 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 91536404 is about 9567.4659131873. The cubic root of 91536404 is about 450.6761916434.

The spelling of 91536404 in words is "ninety-one million, five hundred thirty-six thousand, four hundred four".