13399851 has 4 divisors (see below), whose sum is σ = 17866472. Its totient is φ = 8933232.

The previous prime is 13399849. The next prime is 13399853. The reversal of 13399851 is 15899331.

13399851 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13399849) and next prime (13399853).

It is not a de Polignac number, because 13399851 - 2¹ = 13399849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13399853) 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, 2233306 + ... + 2233311.

It is an arithmetic number, because the mean of its divisors is an integer number (4466618).

Almost surely, 2^13399851 is an apocalyptic number.

13399851 is a deficient number, since it is larger than the sum of its proper divisors (4466621).

13399851 is an equidigital number, since it uses as much as digits as its factorization.

13399851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4466620.

The product of its digits is 29160, while the sum is 39.

The square root of 13399851 is about 3660.5806916390. The cubic root of 13399851 is about 237.5198934398.

The spelling of 13399851 in words is "thirteen million, three hundred ninety-nine thousand, eight hundred fifty-one".