79389659 has 2 divisors, whose sum is σ = 79389660. Its totient is φ = 79389658.

The previous prime is 79389649. The next prime is 79389689. The reversal of 79389659 is 95698397.

It is a weak prime.

It is an emirp because it is prime and its reverse (95698397) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79389659 - 2¹⁶ = 79324123 is a prime.

It is a super-2 number, since 2×79389659² = 12605435912272562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79389649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39694829 + 39694830.

It is an arithmetic number, because the mean of its divisors is an integer number (39694830).

Almost surely, 2^79389659 is an apocalyptic number.

79389659 is a deficient number, since it is larger than the sum of its proper divisors (1).

79389659 is an equidigital number, since it uses as much as digits as its factorization.

79389659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3674160, while the sum is 56.

The square root of 79389659 is about 8910.0874855413. The cubic root of 79389659 is about 429.7883562762.

The spelling of 79389659 in words is "seventy-nine million, three hundred eighty-nine thousand, six hundred fifty-nine".