289440948 has 24 divisors (see below), whose sum is σ = 675706752. Its totient is φ = 96431104.

The previous prime is 289440917. The next prime is 289440979. The reversal of 289440948 is 849044982.

It is an interprime number because it is at equal distance from previous prime (289440917) and next prime (289440979).

It is a junction number, because it is equal to n+sod(n) for n = 289440897 and 289440906.

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, 24436 + ... + 34292.

It is an arithmetic number, because the mean of its divisors is an integer number (28154448).

Almost surely, 2^289440948 is an apocalyptic number.

It is an amenable number.

289440948 is an abundant number, since it is smaller than the sum of its proper divisors (386265804).

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

289440948 is a wasteful number, since it uses less digits than its factorization.

289440948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12311 (or 12309 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The square root of 289440948 is about 17012.9641156384. The cubic root of 289440948 is about 661.4849850534.

The spelling of 289440948 in words is "two hundred eighty-nine million, four hundred forty thousand, nine hundred forty-eight".