13970879 has 4 divisors (see below), whose sum is σ = 15045576. Its totient is φ = 12896184.

The previous prime is 13970851. The next prime is 13970881. The reversal of 13970879 is 97807931.

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

It is a cyclic number.

It is not a de Polignac number, because 13970879 - 2¹² = 13966783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13970839) 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, 537329 + ... + 537354.

It is an arithmetic number, because the mean of its divisors is an integer number (3761394).

Almost surely, 2^13970879 is an apocalyptic number.

13970879 is a deficient number, since it is larger than the sum of its proper divisors (1074697).

13970879 is a wasteful number, since it uses less digits than its factorization.

13970879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074696.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 13970879 is about 3737.7639037264. The cubic root of 13970879 is about 240.8470014819.

The spelling of 13970879 in words is "thirteen million, nine hundred seventy thousand, eight hundred seventy-nine".