13975813 has 4 divisors (see below), whose sum is σ = 14018368. Its totient is φ = 13933260.

The previous prime is 13975799. The next prime is 13975859. The reversal of 13975813 is 31857931.

It is a happy number.

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 13975813 - 2¹³ = 13967621 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 (13972813) 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, 20781 + ... + 21442.

It is an arithmetic number, because the mean of its divisors is an integer number (3504592).

Almost surely, 2^13975813 is an apocalyptic number.

It is an amenable number.

13975813 is a deficient number, since it is larger than the sum of its proper divisors (42555).

13975813 is an equidigital number, since it uses as much as digits as its factorization.

13975813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42554.

The product of its digits is 22680, while the sum is 37.

The square root of 13975813 is about 3738.4238657488. The cubic root of 13975813 is about 240.8753509088.

The spelling of 13975813 in words is "thirteen million, nine hundred seventy-five thousand, eight hundred thirteen".