79694039 has 2 divisors, whose sum is σ = 79694040. Its totient is φ = 79694038.

The previous prime is 79694029. The next prime is 79694047. The reversal of 79694039 is 93049697.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79694039 - 2⁴ = 79694023 is a prime.

It is a super-2 number, since 2×79694039² = 12702279704267042, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 79693984 and 79694002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79694009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39847019 + 39847020.

It is an arithmetic number, because the mean of its divisors is an integer number (39847020).

Almost surely, 2^79694039 is an apocalyptic number.

79694039 is a deficient number, since it is larger than the sum of its proper divisors (1).

79694039 is an equidigital number, since it uses as much as digits as its factorization.

79694039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 79694039 is about 8927.1517854241. The cubic root of 79694039 is about 430.3369254058.

The spelling of 79694039 in words is "seventy-nine million, six hundred ninety-four thousand, thirty-nine".