289999952 has 20 divisors (see below), whose sum is σ = 612954816. Its totient is φ = 131818080.

The previous prime is 289999937. The next prime is 289999961. The reversal of 289999952 is 259999982.

It is a congruent 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, 823688 + ... + 824039.

Almost surely, 2^289999952 is an apocalyptic number.

289999952 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

289999952 is an abundant number, since it is smaller than the sum of its proper divisors (322954864).

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

289999952 is a wasteful number, since it uses less digits than its factorization.

289999952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647746 (or 1647740 counting only the distinct ones).

The product of its digits is 9447840, while the sum is 62.

The square root of 289999952 is about 17029.3849565978. The cubic root of 289999952 is about 661.9105582834.

The spelling of 289999952 in words is "two hundred eighty-nine million, nine hundred ninety-nine thousand, nine hundred fifty-two".