79379779 has 2 divisors, whose sum is σ = 79379780. Its totient is φ = 79379778.

The previous prime is 79379761. The next prime is 79379801. The reversal of 79379779 is 97797397.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79379779 - 2¹³ = 79371587 is a prime.

It is a super-2 number, since 2×79379779² = 12602298628177682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79371779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39689889 + 39689890.

It is an arithmetic number, because the mean of its divisors is an integer number (39689890).

Almost surely, 2^79379779 is an apocalyptic number.

79379779 is a deficient number, since it is larger than the sum of its proper divisors (1).

79379779 is an equidigital number, since it uses as much as digits as its factorization.

79379779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5250987, while the sum is 58.

The square root of 79379779 is about 8909.5330405134. The cubic root of 79379779 is about 429.7705265606.

The spelling of 79379779 in words is "seventy-nine million, three hundred seventy-nine thousand, seven hundred seventy-nine".