289553994 has 16 divisors (see below), whose sum is σ = 643453440. Its totient is φ = 96517980.

The previous prime is 289553947. The next prime is 289554011. The reversal of 289553994 is 499355982.

It is a happy number.

289553994 is a `hidden beast` number, since 2 + 89 + 553 + 9 + 9 + 4 = 666.

289553994 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 5362111 = 289553994 / (2 + 8 + 9 + 5 + 5 + 3 + 9 + 9 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 289553994.

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, 2681002 + ... + 2681109.

It is an arithmetic number, because the mean of its divisors is an integer number (40215840).

Almost surely, 2^289553994 is an apocalyptic number.

289553994 is an abundant number, since it is smaller than the sum of its proper divisors (353899446).

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

289553994 is a wasteful number, since it uses less digits than its factorization.

289553994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5362122 (or 5362116 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The square root of 289553994 is about 17016.2861400483. The cubic root of 289553994 is about 661.5710918499.

The spelling of 289553994 in words is "two hundred eighty-nine million, five hundred fifty-three thousand, nine hundred ninety-four".