279847355 has 4 divisors (see below), whose sum is σ = 335816832. Its totient is φ = 223877880.

The previous prime is 279847349. The next prime is 279847369. The reversal of 279847355 is 553748972.

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

It is not a de Polignac number, because 279847355 - 2¹² = 279843259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27984731 + ... + 27984740.

It is an arithmetic number, because the mean of its divisors is an integer number (83954208).

Almost surely, 2^279847355 is an apocalyptic number.

279847355 is a deficient number, since it is larger than the sum of its proper divisors (55969477).

279847355 is an equidigital number, since it uses as much as digits as its factorization.

279847355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55969476.

The product of its digits is 2116800, while the sum is 50.

The square root of 279847355 is about 16728.6387670964. The cubic root of 279847355 is about 654.0943566378.

The spelling of 279847355 in words is "two hundred seventy-nine million, eight hundred forty-seven thousand, three hundred fifty-five".