679435469 has 4 divisors (see below), whose sum is σ = 679512960. Its totient is φ = 679357980.

The previous prime is 679435457. The next prime is 679435501. The reversal of 679435469 is 964534976.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 679435469 - 2¹² = 679431373 is a prime.

It is a super-2 number, since 2×679435469² = 923265113070499922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 679435469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679435429) 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, 23627 + ... + 43784.

It is an arithmetic number, because the mean of its divisors is an integer number (169878240).

Almost surely, 2^679435469 is an apocalyptic number.

It is an amenable number.

679435469 is a deficient number, since it is larger than the sum of its proper divisors (77491).

679435469 is a wasteful number, since it uses less digits than its factorization.

679435469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77490.

The product of its digits is 4898880, while the sum is 53.

The square root of 679435469 is about 26065.9829854928. The cubic root of 679435469 is about 879.1225193478.

The spelling of 679435469 in words is "six hundred seventy-nine million, four hundred thirty-five thousand, four hundred sixty-nine".