79024139 has 2 divisors, whose sum is σ = 79024140. Its totient is φ = 79024138.

The previous prime is 79024133. The next prime is 79024147. The reversal of 79024139 is 93142097.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79024139 - 2¹² = 79020043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79024099 and 79024108.

It is not a weakly prime, because it can be changed into another prime (79024133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39512069 + 39512070.

It is an arithmetic number, because the mean of its divisors is an integer number (39512070).

Almost surely, 2^79024139 is an apocalyptic number.

79024139 is a deficient number, since it is larger than the sum of its proper divisors (1).

79024139 is an equidigital number, since it uses as much as digits as its factorization.

79024139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 79024139 is about 8889.5522384426. The cubic root of 79024139 is about 429.1277414576.

The spelling of 79024139 in words is "seventy-nine million, twenty-four thousand, one hundred thirty-nine".