91004037 has 8 divisors (see below), whose sum is σ = 123048000. Its totient is φ = 59814720.

The previous prime is 91004033. The next prime is 91004047. The reversal of 91004037 is 73040019.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91004037 - 2² = 91004033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91003998 and 91004016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91004033) 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 in 7 ways as a sum of consecutive naturals, for example, 213412 + ... + 213837.

It is an arithmetic number, because the mean of its divisors is an integer number (15381000).

Almost surely, 2^91004037 is an apocalyptic number.

It is an amenable number.

91004037 is a deficient number, since it is larger than the sum of its proper divisors (32043963).

91004037 is a wasteful number, since it uses less digits than its factorization.

91004037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427323.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 91004037 is about 9539.6036081171. The cubic root of 91004037 is about 449.8007957807.

The spelling of 91004037 in words is "ninety-one million, four thousand, thirty-seven".