91004396 has 12 divisors (see below), whose sum is σ = 182008848. Its totient is φ = 39001872.

The previous prime is 91004393. The next prime is 91004411. The reversal of 91004396 is 69340019.

91004396 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (91004393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1625051 + ... + 1625106.

It is an arithmetic number, because the mean of its divisors is an integer number (15167404).

Almost surely, 2^91004396 is an apocalyptic number.

It is an amenable number.

91004396 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.

91004396 is a wasteful number, since it uses less digits than its factorization.

91004396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3250168 (or 3250166 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 91004396 is about 9539.6224243940. The cubic root of 91004396 is about 449.8013872500.

The spelling of 91004396 in words is "ninety-one million, four thousand, three hundred ninety-six".