279450427 has 2 divisors, whose sum is σ = 279450428. Its totient is φ = 279450426.

The previous prime is 279450401. The next prime is 279450449. The reversal of 279450427 is 724054972.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-279450427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 279450427.

It is not a weakly prime, because it can be changed into another prime (279450527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139725213 + 139725214.

It is an arithmetic number, because the mean of its divisors is an integer number (139725214).

Almost surely, 2^279450427 is an apocalyptic number.

279450427 is a deficient number, since it is larger than the sum of its proper divisors (1).

279450427 is an equidigital number, since it uses as much as digits as its factorization.

279450427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 279450427 is about 16716.7708305163. The cubic root of 279450427 is about 653.7849603343.

The spelling of 279450427 in words is "two hundred seventy-nine million, four hundred fifty thousand, four hundred twenty-seven".