13590991 has 4 divisors (see below), whose sum is σ = 13599184. Its totient is φ = 13582800.

The previous prime is 13590979. The next prime is 13591013. The reversal of 13590991 is 19909531.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 19909531 = 1307 ⋅15233.

It is a cyclic number.

It is not a de Polignac number, because 13590991 - 2⁵ = 13590959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13590991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13590901) 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, 630 + ... + 5251.

It is an arithmetic number, because the mean of its divisors is an integer number (3399796).

Almost surely, 2^13590991 is an apocalyptic number.

13590991 is a deficient number, since it is larger than the sum of its proper divisors (8193).

13590991 is an equidigital number, since it uses as much as digits as its factorization.

13590991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8192.

The product of its (nonzero) digits is 10935, while the sum is 37.

The square root of 13590991 is about 3686.5961265102. The cubic root of 13590991 is about 238.6439204193.

The spelling of 13590991 in words is "thirteen million, five hundred ninety thousand, nine hundred ninety-one".