13090387 has 4 divisors (see below), whose sum is σ = 13237560. Its totient is φ = 12943216.

The previous prime is 13090369. The next prime is 13090421. The reversal of 13090387 is 78309031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78309031 = 2389 ⋅32779.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13090387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13090087) 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, 73453 + ... + 73630.

It is an arithmetic number, because the mean of its divisors is an integer number (3309390).

Almost surely, 2^13090387 is an apocalyptic number.

13090387 is a deficient number, since it is larger than the sum of its proper divisors (147173).

13090387 is an equidigital number, since it uses as much as digits as its factorization.

13090387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147172.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 13090387 is about 3618.0639850616. The cubic root of 13090387 is about 235.6771595907.

The spelling of 13090387 in words is "thirteen million, ninety thousand, three hundred eighty-seven".