79218967 has 2 divisors, whose sum is σ = 79218968. Its totient is φ = 79218966.

The previous prime is 79218913. The next prime is 79218977. The reversal of 79218967 is 76981297.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79218967 - 2¹¹ = 79216919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79218967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79218907) 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, 39609483 + 39609484.

It is an arithmetic number, because the mean of its divisors is an integer number (39609484).

Almost surely, 2^79218967 is an apocalyptic number.

79218967 is a deficient number, since it is larger than the sum of its proper divisors (1).

79218967 is an equidigital number, since it uses as much as digits as its factorization.

79218967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 49.

The square root of 79218967 is about 8900.5037497885. The cubic root of 79218967 is about 429.4801126295.

Subtracting from 79218967 its reverse (76981297), we obtain a triangular number (2237670 = T₂₁₁₅).

The spelling of 79218967 in words is "seventy-nine million, two hundred eighteen thousand, nine hundred sixty-seven".