289656338 has 4 divisors (see below), whose sum is σ = 434484510. Its totient is φ = 144828168.

The previous prime is 289656337. The next prime is 289656371. The reversal of 289656338 is 833656982.

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

It can be written as a sum of positive squares in only one way, i.e., 276789769 + 12866569 = 16637^2 + 3587^2 .

It is not an unprimeable number, because it can be changed into a prime (289656337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72414083 + ... + 72414086.

Almost surely, 2^289656338 is an apocalyptic number.

289656338 is a deficient number, since it is larger than the sum of its proper divisors (144828172).

289656338 is a wasteful number, since it uses less digits than its factorization.

289656338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144828171.

The product of its digits is 1866240, while the sum is 50.

The square root of 289656338 is about 17019.2931110549. The cubic root of 289656338 is about 661.6490276380.

The spelling of 289656338 in words is "two hundred eighty-nine million, six hundred fifty-six thousand, three hundred thirty-eight".