289399684 has 18 divisors (see below), whose sum is σ = 589135470. Its totient is φ = 124028352.

The previous prime is 289399679. The next prime is 289399699. The reversal of 289399684 is 486993982.

It can be written as a sum of positive squares in only one way, i.e., 215267584 + 74132100 = 14672^2 + 8610^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 738069 + ... + 738460.

Almost surely, 2^289399684 is an apocalyptic number.

It is an amenable number.

289399684 is an abundant number, since it is smaller than the sum of its proper divisors (299735786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289399684 is a wasteful number, since it uses less digits than its factorization.

289399684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476547 (or 1476538 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 58.

The square root of 289399684 is about 17011.7513501697. The cubic root of 289399684 is about 661.4535488038.

The spelling of 289399684 in words is "two hundred eighty-nine million, three hundred ninety-nine thousand, six hundred eighty-four".