79385869 has 16 divisors (see below), whose sum is σ = 86771520. Its totient is φ = 72334080.

The previous prime is 79385861. The next prime is 79385879. The reversal of 79385869 is 96858397.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 79385869 - 2³ = 79385861 is a prime.

It is a super-2 number, since 2×79385869² = 12604232393770322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79385861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95347 + ... + 96175.

It is an arithmetic number, because the mean of its divisors is an integer number (5423220).

Almost surely, 2^79385869 is an apocalyptic number.

It is an amenable number.

79385869 is a deficient number, since it is larger than the sum of its proper divisors (7385651).

79385869 is a wasteful number, since it uses less digits than its factorization.

79385869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020.

The product of its digits is 3265920, while the sum is 55.

The square root of 79385869 is about 8909.8748027119. The cubic root of 79385869 is about 429.7815169145.

The spelling of 79385869 in words is "seventy-nine million, three hundred eighty-five thousand, eight hundred sixty-nine".