289431337 has 4 divisors (see below), whose sum is σ = 311695300. Its totient is φ = 267167376.

The previous prime is 289431319. The next prime is 289431343. The reversal of 289431337 is 733134982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110166016 + 179265321 = 10496^2 + 13389^2 .

It is a cyclic number.

It is not a de Polignac number, because 289431337 - 2¹⁹ = 288907049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 289431337.

It is not an unprimeable number, because it can be changed into a prime (289431377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11131962 + ... + 11131987.

It is an arithmetic number, because the mean of its divisors is an integer number (77923825).

Almost surely, 2^289431337 is an apocalyptic number.

It is an amenable number.

289431337 is a deficient number, since it is larger than the sum of its proper divisors (22263963).

289431337 is a wasteful number, since it uses less digits than its factorization.

289431337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22263962.

The product of its digits is 108864, while the sum is 40.

The square root of 289431337 is about 17012.6816522264. The cubic root of 289431337 is about 661.4776633497.

The spelling of 289431337 in words is "two hundred eighty-nine million, four hundred thirty-one thousand, three hundred thirty-seven".