279855463 has 4 divisors (see below), whose sum is σ = 286681248. Its totient is φ = 273029680.

The previous prime is 279855451. The next prime is 279855469. The reversal of 279855463 is 364558972.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-279855463 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 (279855469) 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, 3412831 + ... + 3412912.

It is an arithmetic number, because the mean of its divisors is an integer number (71670312).

Almost surely, 2^279855463 is an apocalyptic number.

279855463 is a deficient number, since it is larger than the sum of its proper divisors (6825785).

279855463 is an equidigital number, since it uses as much as digits as its factorization.

279855463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6825784.

The product of its digits is 1814400, while the sum is 49.

The square root of 279855463 is about 16728.8811042460. The cubic root of 279855463 is about 654.1006735885.

The spelling of 279855463 in words is "two hundred seventy-nine million, eight hundred fifty-five thousand, four hundred sixty-three".