279048997 has 4 divisors (see below), whose sum is σ = 282871660. Its totient is φ = 275226336.

The previous prime is 279048989. The next prime is 279049013. The reversal of 279048997 is 799840972.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 206611876 + 72437121 = 14374^2 + 8511^2 .

It is a cyclic number.

It is not a de Polignac number, because 279048997 - 2³ = 279048989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (279048947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1911222 + ... + 1911367.

It is an arithmetic number, because the mean of its divisors is an integer number (70717915).

Almost surely, 2^279048997 is an apocalyptic number.

It is an amenable number.

279048997 is a deficient number, since it is larger than the sum of its proper divisors (3822663).

279048997 is an equidigital number, since it uses as much as digits as its factorization.

279048997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3822662.

The product of its (nonzero) digits is 2286144, while the sum is 55.

The square root of 279048997 is about 16704.7597109327. The cubic root of 279048997 is about 653.4717567023.

The spelling of 279048997 in words is "two hundred seventy-nine million, forty-eight thousand, nine hundred ninety-seven".