79338739 has 2 divisors, whose sum is σ = 79338740. Its totient is φ = 79338738.

The previous prime is 79338671. The next prime is 79338757. The reversal of 79338739 is 93783397.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79338739 - 2²⁵ = 45784307 is a prime.

It is a super-2 number, since 2×79338739² = 12589271012220242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79338692 and 79338701.

It is not a weakly prime, because it can be changed into another prime (79338839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39669369 + 39669370.

It is an arithmetic number, because the mean of its divisors is an integer number (39669370).

Almost surely, 2^79338739 is an apocalyptic number.

79338739 is a deficient number, since it is larger than the sum of its proper divisors (1).

79338739 is an equidigital number, since it uses as much as digits as its factorization.

79338739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 49.

The square root of 79338739 is about 8907.2295917418. The cubic root of 79338739 is about 429.6964488248.

The spelling of 79338739 in words is "seventy-nine million, three hundred thirty-eight thousand, seven hundred thirty-nine".