279945122 has 6 divisors (see below), whose sum is σ = 419953179. Its totient is φ = 139960730.

The previous prime is 279945109. The next prime is 279945131. The reversal of 279945122 is 221549972.

It can be written as a sum of positive squares in only one way, i.e., 139972561 + 139972561 = 11831^2 + 11831^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=11831.

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 279945122.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 17747 + ... + 29577.

Almost surely, 2^279945122 is an apocalyptic number.

279945122 is a deficient number, since it is larger than the sum of its proper divisors (140008057).

279945122 is an frugal number, since it uses more digits than its factorization.

279945122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23664 (or 11833 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 279945122 is about 16731.5606564361. The cubic root of 279945122 is about 654.1705188697.

The spelling of 279945122 in words is "two hundred seventy-nine million, nine hundred forty-five thousand, one hundred twenty-two".