679059909 has 32 divisors (see below), whose sum is σ = 1104122880. Its totient is φ = 409057200.

The previous prime is 679059907. The next prime is 679059919. The reversal of 679059909 is 909950976.

It is not a de Polignac number, because 679059909 - 2¹ = 679059907 is a prime.

It is a super-2 number, since 2×679059909² = 922244720022176562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679059907) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42754 + ... + 56444.

It is an arithmetic number, because the mean of its divisors is an integer number (34503840).

Almost surely, 2^679059909 is an apocalyptic number.

It is an amenable number.

679059909 is a deficient number, since it is larger than the sum of its proper divisors (425062971).

679059909 is a wasteful number, since it uses less digits than its factorization.

679059909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13878 (or 13872 counting only the distinct ones).

The product of its (nonzero) digits is 1377810, while the sum is 54.

The square root of 679059909 is about 26058.7779644403. Note that the first 3 decimals coincide. The cubic root of 679059909 is about 878.9605102878.

The spelling of 679059909 in words is "six hundred seventy-nine million, fifty-nine thousand, nine hundred nine".