13913817 has 4 divisors (see below), whose sum is σ = 18551760. Its totient is φ = 9275876.

The previous prime is 13913807. The next prime is 13913819. The reversal of 13913817 is 71831931.

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 13913817 - 2¹⁰ = 13912793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13913819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2318967 + ... + 2318972.

It is an arithmetic number, because the mean of its divisors is an integer number (4637940).

Almost surely, 2^13913817 is an apocalyptic number.

It is an amenable number.

13913817 is a deficient number, since it is larger than the sum of its proper divisors (4637943).

13913817 is an equidigital number, since it uses as much as digits as its factorization.

13913817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4637942.

The product of its digits is 4536, while the sum is 33.

The square root of 13913817 is about 3730.1229202266. The cubic root of 13913817 is about 240.5186526624.

The spelling of 13913817 in words is "thirteen million, nine hundred thirteen thousand, eight hundred seventeen".