289397490 has 32 divisors (see below), whose sum is σ = 707662656. Its totient is φ = 75716160.

The previous prime is 289397489. The next prime is 289397497. The reversal of 289397490 is 94793982.

It is not an unprimeable number, because it can be changed into a prime (289397497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89416 + ... + 92595.

It is an arithmetic number, because the mean of its divisors is an integer number (22114458).

Almost surely, 2^289397490 is an apocalyptic number.

289397490 is an abundant number, since it is smaller than the sum of its proper divisors (418265166).

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

289397490 is a wasteful number, since it uses less digits than its factorization.

289397490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182074.

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 289397490 is about 17011.6868652112. The cubic root of 289397490 is about 661.4518772600.

The spelling of 289397490 in words is "two hundred eighty-nine million, three hundred ninety-seven thousand, four hundred ninety".