279132961 has 8 divisors (see below), whose sum is σ = 287015400. Its totient is φ = 271301760.

The previous prime is 279132929. The next prime is 279132967. The reversal of 279132961 is 169231972.

It can be written as a sum of positive squares in 4 ways, for example, as 2742336 + 276390625 = 1656^2 + 16625^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 279132961 - 2⁵ = 279132929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (279132967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1626 + ... + 23683.

It is an arithmetic number, because the mean of its divisors is an integer number (35876925).

Almost surely, 2^279132961 is an apocalyptic number.

It is an amenable number.

279132961 is a deficient number, since it is larger than the sum of its proper divisors (7882439).

279132961 is a wasteful number, since it uses less digits than its factorization.

279132961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25619.

The product of its digits is 40824, while the sum is 40.

The square root of 279132961 is about 16707.2726978403. The cubic root of 279132961 is about 653.5372919081.

The spelling of 279132961 in words is "two hundred seventy-nine million, one hundred thirty-two thousand, nine hundred sixty-one".