279949972 has 12 divisors (see below), whose sum is σ = 490856436. Its totient is φ = 139705280.

The previous prime is 279949961. The next prime is 279949973.

It is a happy number.

279949972 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 127328656 + 152621316 = 11284^2 + 12354^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (279949973) 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, 65083 + ... + 69250.

It is an arithmetic number, because the mean of its divisors is an integer number (40904703).

Almost surely, 2^279949972 is an apocalyptic number.

It is an amenable number.

279949972 is a deficient number, since it is larger than the sum of its proper divisors (210906464).

279949972 is a wasteful number, since it uses less digits than its factorization.

279949972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134858 (or 134856 counting only the distinct ones).

The product of its digits is 5143824, while the sum is 58.

The square root of 279949972 is about 16731.7055914811. The cubic root of 279949972 is about 654.1742966443.

The spelling of 279949972 in words is "two hundred seventy-nine million, nine hundred forty-nine thousand, nine hundred seventy-two".