91013413 has 4 divisors (see below), whose sum is σ = 93130048. Its totient is φ = 88896780.

The previous prime is 91013411. The next prime is 91013443. The reversal of 91013413 is 31431019.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91013413 - 2¹ = 91013411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91013411) 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, 1058253 + ... + 1058338.

It is an arithmetic number, because the mean of its divisors is an integer number (23282512).

Almost surely, 2^91013413 is an apocalyptic number.

It is an amenable number.

91013413 is a deficient number, since it is larger than the sum of its proper divisors (2116635).

91013413 is a wasteful number, since it uses less digits than its factorization.

91013413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116634.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 91013413 is about 9540.0950204911. The cubic root of 91013413 is about 449.8162426684.

The spelling of 91013413 in words is "ninety-one million, thirteen thousand, four hundred thirteen".