79674309 has 48 divisors (see below), whose sum is σ = 139636224. Its totient is φ = 43113600.

The previous prime is 79674299. The next prime is 79674319. The reversal of 79674309 is 90347697.

It is an interprime number because it is at equal distance from previous prime (79674299) and next prime (79674319).

It is not a de Polignac number, because 79674309 - 2⁴ = 79674293 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79674319) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38899 + ... + 40895.

It is an arithmetic number, because the mean of its divisors is an integer number (2909088).

Almost surely, 2^79674309 is an apocalyptic number.

It is an amenable number.

79674309 is a deficient number, since it is larger than the sum of its proper divisors (59961915).

79674309 is a wasteful number, since it uses less digits than its factorization.

79674309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058 (or 2055 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 79674309 is about 8926.0466613165. The cubic root of 79674309 is about 430.3014093730.

The spelling of 79674309 in words is "seventy-nine million, six hundred seventy-four thousand, three hundred nine".