13059991 has 8 divisors (see below), whose sum is σ = 14993280. Its totient is φ = 11143608.

The previous prime is 13059989. The next prime is 13060009. The reversal of 13059991 is 19995031.

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

It is not a de Polignac number, because 13059991 - 2¹ = 13059989 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 13059991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13059931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2521 + ... + 5698.

It is an arithmetic number, because the mean of its divisors is an integer number (1874160).

Almost surely, 2^13059991 is an apocalyptic number.

13059991 is a deficient number, since it is larger than the sum of its proper divisors (1933289).

13059991 is an equidigital number, since it uses as much as digits as its factorization.

13059991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8453.

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

The square root of 13059991 is about 3613.8609547131. The cubic root of 13059991 is about 235.4946033686.

The spelling of 13059991 in words is "thirteen million, fifty-nine thousand, nine hundred ninety-one".