289909452 has 48 divisors (see below), whose sum is σ = 775031040. Its totient is φ = 82623552.

The previous prime is 289909447. The next prime is 289909463. The reversal of 289909452 is 254909982.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31078 + ... + 39314.

It is an arithmetic number, because the mean of its divisors is an integer number (16146480).

Almost surely, 2^289909452 is an apocalyptic number.

It is an amenable number.

289909452 is an abundant number, since it is smaller than the sum of its proper divisors (485121588).

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

289909452 is a wasteful number, since it uses less digits than its factorization.

289909452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8670 (or 8668 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 289909452 is about 17026.7275775470. The cubic root of 289909452 is about 661.8416971940.

The spelling of 289909452 in words is "two hundred eighty-nine million, nine hundred nine thousand, four hundred fifty-two".