13708979 has 2 divisors, whose sum is σ = 13708980. Its totient is φ = 13708978.

The previous prime is 13708973. The next prime is 13708997. The reversal of 13708979 is 97980731.

Together with next prime (13708997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (97980731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13708979 is a prime.

It is a super-2 number, since 2×13708979² = 375872210444882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13708973) 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 as a sum of consecutive naturals, namely, 6854489 + 6854490.

It is an arithmetic number, because the mean of its divisors is an integer number (6854490).

Almost surely, 2^13708979 is an apocalyptic number.

13708979 is a deficient number, since it is larger than the sum of its proper divisors (1).

13708979 is an equidigital number, since it uses as much as digits as its factorization.

13708979 is an odious number, because the sum of its binary digits is odd.

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

The square root of 13708979 is about 3702.5638414482. The cubic root of 13708979 is about 239.3325145304.

The spelling of 13708979 in words is "thirteen million, seven hundred eight thousand, nine hundred seventy-nine".