289315690 has 16 divisors (see below), whose sum is σ = 551401992. Its totient is φ = 108918784.

The previous prime is 289315681. The next prime is 289315693. The reversal of 289315690 is 96513982.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 258212761 + 31102929 = 16069^2 + 5577^2 .

It is a super-2 number, since 2×289315690² = 167407136960352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (289315693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 850759 + ... + 851098.

Almost surely, 2^289315690 is an apocalyptic number.

289315690 is a deficient number, since it is larger than the sum of its proper divisors (262086302).

289315690 is a wasteful number, since it uses less digits than its factorization.

289315690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701881.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 289315690 is about 17009.2824657597. The cubic root of 289315690 is about 661.3895502252.

The spelling of 289315690 in words is "two hundred eighty-nine million, three hundred fifteen thousand, six hundred ninety".