679430019 has 4 divisors (see below), whose sum is σ = 905906696. Its totient is φ = 452953344.

The previous prime is 679429999. The next prime is 679430021. The reversal of 679430019 is 910034976.

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

It is not a de Polignac number, because 679430019 - 2²⁰ = 678381443 is a prime.

It is a super-2 number, since 2×679430019² = 923250301436680722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679430029) 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, 113238334 + ... + 113238339.

It is an arithmetic number, because the mean of its divisors is an integer number (226476674).

Almost surely, 2^679430019 is an apocalyptic number.

679430019 is a deficient number, since it is larger than the sum of its proper divisors (226476677).

679430019 is a wasteful number, since it uses less digits than its factorization.

679430019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226476676.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 679430019 is about 26065.8784428993. The cubic root of 679430019 is about 879.1201687539.

The spelling of 679430019 in words is "six hundred seventy-nine million, four hundred thirty thousand, nineteen".