279970 has 8 divisors (see below), whose sum is σ = 503964. Its totient is φ = 111984.

The previous prime is 279967. The next prime is 279977. The reversal of 279970 is 79972.

It can be written as a sum of positive squares in 2 ways, for example, as 269361 + 10609 = 519^2 + 103^2 .

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

It is not an unprimeable number, because it can be changed into a prime (279977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13989 + ... + 14008.

2²⁷⁹⁹⁷⁰ is an apocalyptic number.

279970 is a deficient number, since it is larger than the sum of its proper divisors (223994).

279970 is a wasteful number, since it uses less digits than its factorization.

279970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28004.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 279970 is about 529.1219141181. The cubic root of 279970 is about 65.4189896444.

Subtracting from 279970 its sum of digits (34), we obtain a 7-th power (279936 = 6⁷).

The spelling of 279970 in words is "two hundred seventy-nine thousand, nine hundred seventy".