109708979 has 2 divisors, whose sum is σ = 109708980. Its totient is φ = 109708978.

The previous prime is 109708961. The next prime is 109708981. The reversal of 109708979 is 979807901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109708979 - 2²⁰ = 108660403 is a prime.

Together with 109708981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (109708909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54854489 + 54854490.

It is an arithmetic number, because the mean of its divisors is an integer number (54854490).

Almost surely, 2^109708979 is an apocalyptic number.

109708979 is a deficient number, since it is larger than the sum of its proper divisors (1).

109708979 is an equidigital number, since it uses as much as digits as its factorization.

109708979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 50.

The square root of 109708979 is about 10474.2054113904. The cubic root of 109708979 is about 478.7190659159.

The spelling of 109708979 in words is "one hundred nine million, seven hundred eight thousand, nine hundred seventy-nine".