79670329 has 2 divisors, whose sum is σ = 79670330. Its totient is φ = 79670328.

The previous prime is 79670323. The next prime is 79670359. The reversal of 79670329 is 92307697.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39980329 + 39690000 = 6323^2 + 6300^2 .

It is a cyclic number.

It is not a de Polignac number, because 79670329 - 2⁹ = 79669817 is a prime.

It is a super-2 number, since 2×79670329² = 12694722645936482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79670323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39835164 + 39835165.

It is an arithmetic number, because the mean of its divisors is an integer number (39835165).

Almost surely, 2^79670329 is an apocalyptic number.

It is an amenable number.

79670329 is a deficient number, since it is larger than the sum of its proper divisors (1).

79670329 is an equidigital number, since it uses as much as digits as its factorization.

79670329 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 43.

The square root of 79670329 is about 8925.8237154898. The cubic root of 79670329 is about 430.2942442523.

The spelling of 79670329 in words is "seventy-nine million, six hundred seventy thousand, three hundred twenty-nine".