13199974 has 4 divisors (see below), whose sum is σ = 19799964. Its totient is φ = 6599986.

The previous prime is 13199957. The next prime is 13199981. The reversal of 13199974 is 47999131.

It is a happy number.

13199974 is digitally balanced in base 2, 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 a self number, because there is not a number n which added to its sum of digits gives 13199974.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3299992 + ... + 3299995.

It is an arithmetic number, because the mean of its divisors is an integer number (4949991).

Almost surely, 2^13199974 is an apocalyptic number.

13199974 is a deficient number, since it is larger than the sum of its proper divisors (6599990).

13199974 is an equidigital number, since it uses as much as digits as its factorization.

13199974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6599989.

The product of its digits is 61236, while the sum is 43.

The square root of 13199974 is about 3633.1768467830. The cubic root of 13199974 is about 236.3329949252.

The spelling of 13199974 in words is "thirteen million, one hundred ninety-nine thousand, nine hundred seventy-four".