279798377922 has 126 divisors (see below), whose sum is σ = 732364640163. Its totient is φ = 79901998344.

The previous prime is 279798377909. The next prime is 279798378007. The reversal of 279798377922 is 229773897972.

It can be written as a sum of positive squares in only one way, i.e., 139899188961 + 139899188961 = 374031^2 + 374031^2 .

It is a tau number, because it is divible by the number of its divisors (126).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=374031.

It is an unprimeable number.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 141382729 + ... + 141384707.

Almost surely, 2^279798377922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 279798377922

279798377922 is an abundant number, since it is smaller than the sum of its proper divisors (452566262241).

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

279798377922 is an frugal number, since it uses more digits than its factorization.

279798377922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3992 (or 1991 counting only the distinct ones).

The product of its digits is 336063168, while the sum is 72.

Multiplying 279798377922 by its sum of digits (72), we get a square (20145483210384 = 4488372²).

The spelling of 279798377922 in words is "two hundred seventy-nine billion, seven hundred ninety-eight million, three hundred seventy-seven thousand, nine hundred twenty-two".