13199879 has 8 divisors (see below), whose sum is σ = 16457088. Its totient is φ = 10285560.

The previous prime is 13199867. The next prime is 13199887. The reversal of 13199879 is 97899131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13199879 - 2⁴ = 13199863 is a prime.

It is a super-2 number, since 2×13199879² = 348473611229282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13199899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85637 + ... + 85790.

It is an arithmetic number, because the mean of its divisors is an integer number (2057136).

Almost surely, 2^13199879 is an apocalyptic number.

13199879 is a deficient number, since it is larger than the sum of its proper divisors (3257209).

13199879 is a wasteful number, since it uses less digits than its factorization.

13199879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171445.

The product of its digits is 122472, while the sum is 47.

The square root of 13199879 is about 3633.1637728019. The cubic root of 13199879 is about 236.3324279622.

The spelling of 13199879 in words is "thirteen million, one hundred ninety-nine thousand, eight hundred seventy-nine".