679229892 has 144 divisors (see below), whose sum is σ = 1939025088. Its totient is φ = 198696960.

The previous prime is 679229869. The next prime is 679229893. The reversal of 679229892 is 298922976.

It is a happy number.

It is a super-2 number, since 2×679229892² = 922706492372663328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (679229893) 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, 1923988 + ... + 1924340.

It is an arithmetic number, because the mean of its divisors is an integer number (13465452).

Almost surely, 2^679229892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679229892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (969512544).

679229892 is an abundant number, since it is smaller than the sum of its proper divisors (1259795196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

679229892 is a wasteful number, since it uses less digits than its factorization.

679229892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 525 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 679229892 is about 26062.0392908920. The cubic root of 679229892 is about 879.0338449462.

The spelling of 679229892 in words is "six hundred seventy-nine million, two hundred twenty-nine thousand, eight hundred ninety-two".