279472399 has 2 divisors, whose sum is σ = 279472400. Its totient is φ = 279472398.

The previous prime is 279472393. The next prime is 279472421. The reversal of 279472399 is 993274972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 279472399 - 2⁹ = 279471887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279472393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139736199 + 139736200.

It is an arithmetic number, because the mean of its divisors is an integer number (139736200).

Almost surely, 2^279472399 is an apocalyptic number.

279472399 is a deficient number, since it is larger than the sum of its proper divisors (1).

279472399 is an equidigital number, since it uses as much as digits as its factorization.

279472399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 52.

The square root of 279472399 is about 16717.4280019386. The cubic root of 279472399 is about 653.8020946633.

The spelling of 279472399 in words is "two hundred seventy-nine million, four hundred seventy-two thousand, three hundred ninety-nine".