679209229 has 4 divisors (see below), whose sum is σ = 686211484. Its totient is φ = 672206976.

The previous prime is 679209127. The next prime is 679209233. The reversal of 679209229 is 922902976.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 561595204 + 117614025 = 23698^2 + 10845^2 .

It is a cyclic number.

It is not a de Polignac number, because 679209229 - 2²³ = 670820621 is a prime.

It is a super-2 number, since 2×679209229² = 922650353517548882, 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 (679200229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3500982 + ... + 3501175.

It is an arithmetic number, because the mean of its divisors is an integer number (171552871).

Almost surely, 2^679209229 is an apocalyptic number.

It is an amenable number.

679209229 is a deficient number, since it is larger than the sum of its proper divisors (7002255).

679209229 is an equidigital number, since it uses as much as digits as its factorization.

679209229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7002254.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 679209229 is about 26061.6428683995. The cubic root of 679209229 is about 879.0249310960.

The spelling of 679209229 in words is "six hundred seventy-nine million, two hundred nine thousand, two hundred twenty-nine".