13090391 has 8 divisors (see below), whose sum is σ = 13943664. Its totient is φ = 12246400.

The previous prime is 13090369. The next prime is 13090421. The reversal of 13090391 is 19309031.

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

It is a cyclic number.

It is not a de Polignac number, because 13090391 - 2¹⁰ = 13089367 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 13090391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13090331) 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, 716 + ... + 5166.

It is an arithmetic number, because the mean of its divisors is an integer number (1742958).

Almost surely, 2^13090391 is an apocalyptic number.

13090391 is a deficient number, since it is larger than the sum of its proper divisors (853273).

13090391 is a wasteful number, since it uses less digits than its factorization.

13090391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4641.

The product of its (nonzero) digits is 729, while the sum is 26.

The square root of 13090391 is about 3618.0645378434. The cubic root of 13090391 is about 235.6771835958.

The spelling of 13090391 in words is "thirteen million, ninety thousand, three hundred ninety-one".