279012989 has 8 divisors (see below), whose sum is σ = 288367872. Its totient is φ = 269680320.

The previous prime is 279012949. The next prime is 279013001. The reversal of 279012989 is 989210972.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 279012989 - 2⁸ = 279012733 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 (279012919) 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, 22277 + ... + 32469.

It is an arithmetic number, because the mean of its divisors is an integer number (36045984).

Almost surely, 2^279012989 is an apocalyptic number.

It is an amenable number.

279012989 is a deficient number, since it is larger than the sum of its proper divisors (9354883).

279012989 is a wasteful number, since it uses less digits than its factorization.

279012989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11107.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 279012989 is about 16703.6818995095. The cubic root of 279012989 is about 653.4436478714.

The spelling of 279012989 in words is "two hundred seventy-nine million, twelve thousand, nine hundred eighty-nine".