338917289 has 4 divisors (see below), whose sum is σ = 343975824. Its totient is φ = 333858756.

The previous prime is 338917247. The next prime is 338917309. The reversal of 338917289 is 982719833.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 338917289 - 2²⁸ = 70481833 is a prime.

It is a super-2 number, since 2×338917289² = 229729857566219042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338919289) 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, 2529167 + ... + 2529300.

It is an arithmetic number, because the mean of its divisors is an integer number (85993956).

Almost surely, 2^338917289 is an apocalyptic number.

It is an amenable number.

338917289 is a deficient number, since it is larger than the sum of its proper divisors (5058535).

338917289 is an equidigital number, since it uses as much as digits as its factorization.

338917289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5058534.

The product of its digits is 653184, while the sum is 50.

The square root of 338917289 is about 18409.7063800594. The cubic root of 338917289 is about 697.2115525573.

The spelling of 338917289 in words is "three hundred thirty-eight million, nine hundred seventeen thousand, two hundred eighty-nine".