289990460 has 24 divisors (see below), whose sum is σ = 625440480. Its totient is φ = 112860864.

The previous prime is 289990453. The next prime is 289990511. The reversal of 289990460 is 64099982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195200 + ... + 196679.

It is an arithmetic number, because the mean of its divisors is an integer number (26060020).

Almost surely, 2^289990460 is an apocalyptic number.

289990460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289990460 is an abundant number, since it is smaller than the sum of its proper divisors (335450020).

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

289990460 is a wasteful number, since it uses less digits than its factorization.

289990460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391925 (or 391923 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 289990460 is about 17029.1062595780. The cubic root of 289990460 is about 661.9033365310.

The spelling of 289990460 in words is "two hundred eighty-nine million, nine hundred ninety thousand, four hundred sixty".