338558849 has 4 divisors (see below), whose sum is σ = 338853636. Its totient is φ = 338264064.

The previous prime is 338558819. The next prime is 338558903. The reversal of 338558849 is 948855833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 948855833 = 17 ⋅55815049.

It can be written as a sum of positive squares in 2 ways, for example, as 279959824 + 58599025 = 16732^2 + 7655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338558849 is a prime.

It is a super-2 number, since 2×338558849² = 229244188472409602, which contains 22 as substring.

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 338558849.

It is not an unprimeable number, because it can be changed into a prime (338558819) 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, 145664 + ... + 147969.

It is an arithmetic number, because the mean of its divisors is an integer number (84713409).

Almost surely, 2^338558849 is an apocalyptic number.

It is an amenable number.

338558849 is a deficient number, since it is larger than the sum of its proper divisors (294787).

338558849 is a wasteful number, since it uses less digits than its factorization.

338558849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294786.

The product of its digits is 4147200, while the sum is 53.

The square root of 338558849 is about 18399.9687227995. The cubic root of 338558849 is about 696.9656748066.

The spelling of 338558849 in words is "three hundred thirty-eight million, five hundred fifty-eight thousand, eight hundred forty-nine".