109179479 has 2 divisors, whose sum is σ = 109179480. Its totient is φ = 109179478.

The previous prime is 109179467. The next prime is 109179481. The reversal of 109179479 is 974971901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109179479 - 2¹² = 109175383 is a prime.

It is a super-2 number, since 2×109179479² = 23840317269422882, which contains 22 as substring.

Together with 109179481, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109179379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54589739 + 54589740.

It is an arithmetic number, because the mean of its divisors is an integer number (54589740).

Almost surely, 2^109179479 is an apocalyptic number.

109179479 is a deficient number, since it is larger than the sum of its proper divisors (1).

109179479 is an equidigital number, since it uses as much as digits as its factorization.

109179479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 47.

The square root of 109179479 is about 10448.8984586893. The cubic root of 109179479 is about 477.9476594592.

The spelling of 109179479 in words is "one hundred nine million, one hundred seventy-nine thousand, four hundred seventy-nine".