289399250 has 64 divisors (see below), whose sum is σ = 629531136. Its totient is φ = 97560000.

The previous prime is 289399223. The next prime is 289399259. The reversal of 289399250 is 52993982.

It is a junction number, because it is equal to n+sod(n) for n = 289399195 and 289399204.

It is not an unprimeable number, because it can be changed into a prime (289399259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105395 + ... + 108105.

It is an arithmetic number, because the mean of its divisors is an integer number (9836424).

Almost surely, 2^289399250 is an apocalyptic number.

289399250 is an abundant number, since it is smaller than the sum of its proper divisors (340131886).

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

289399250 is a wasteful number, since it uses less digits than its factorization.

289399250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796 (or 2786 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 289399250 is about 17011.7385942766. The cubic root of 289399250 is about 661.4532181527.

The spelling of 289399250 in words is "two hundred eighty-nine million, three hundred ninety-nine thousand, two hundred fifty".