279464089 has 2 divisors, whose sum is σ = 279464090. Its totient is φ = 279464088.

The previous prime is 279464069. The next prime is 279464093. The reversal of 279464089 is 980464972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253860489 + 25603600 = 15933^2 + 5060^2 .

It is a cyclic number.

It is not a de Polignac number, because 279464089 - 2²¹ = 277366937 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (279464069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139732044 + 139732045.

It is an arithmetic number, because the mean of its divisors is an integer number (139732045).

Almost surely, 2^279464089 is an apocalyptic number.

It is an amenable number.

279464089 is a deficient number, since it is larger than the sum of its proper divisors (1).

279464089 is an equidigital number, since it uses as much as digits as its factorization.

279464089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 279464089 is about 16717.1794570735. The cubic root of 279464089 is about 653.7956144178.

The spelling of 279464089 in words is "two hundred seventy-nine million, four hundred sixty-four thousand, eighty-nine".