279440223 has 8 divisors (see below), whose sum is σ = 374133936. Its totient is φ = 185520000.

The previous prime is 279440209. The next prime is 279440233. The reversal of 279440223 is 322044972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 279440223 - 2⁹ = 279439711 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (279440233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192528 + ... + 193973.

It is an arithmetic number, because the mean of its divisors is an integer number (46766742).

Almost surely, 2^279440223 is an apocalyptic number.

279440223 is a deficient number, since it is larger than the sum of its proper divisors (94693713).

279440223 is a wasteful number, since it uses less digits than its factorization.

279440223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386745.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 279440223 is about 16716.4656252451. The cubic root of 279440223 is about 653.7770026880. Note that the first 3 decimals are identical.

The spelling of 279440223 in words is "two hundred seventy-nine million, four hundred forty thousand, two hundred twenty-three".