279955427 has 2 divisors, whose sum is σ = 279955428. Its totient is φ = 279955426.

The previous prime is 279955409. The next prime is 279955457. The reversal of 279955427 is 724559972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 279955427 - 2¹⁴ = 279939043 is a prime.

It is a super-2 number, since 2×279955427² = 156750082213504658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (279955457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139977713 + 139977714.

It is an arithmetic number, because the mean of its divisors is an integer number (139977714).

Almost surely, 2^279955427 is an apocalyptic number.

279955427 is a deficient number, since it is larger than the sum of its proper divisors (1).

279955427 is an equidigital number, since it uses as much as digits as its factorization.

279955427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1587600, while the sum is 50.

The square root of 279955427 is about 16731.8686045522. The cubic root of 279955427 is about 654.1785456149.

The spelling of 279955427 in words is "two hundred seventy-nine million, nine hundred fifty-five thousand, four hundred twenty-seven".