338409823 has 16 divisors (see below), whose sum is σ = 357146496. Its totient is φ = 320336640.

The previous prime is 338409809. The next prime is 338409839. The reversal of 338409823 is 328904833.

It is a cyclic number.

It is not a de Polignac number, because 338409823 - 2⁹ = 338409311 is a prime.

It is a super-2 number, since 2×338409823² = 229042416605782658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338409023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180913 + ... + 182773.

It is an arithmetic number, because the mean of its divisors is an integer number (22321656).

Almost surely, 2^338409823 is an apocalyptic number.

338409823 is a deficient number, since it is larger than the sum of its proper divisors (18736673).

338409823 is a wasteful number, since it uses less digits than its factorization.

338409823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2034.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 338409823 is about 18395.9186506138. The cubic root of 338409823 is about 696.8633969205.

The spelling of 338409823 in words is "three hundred thirty-eight million, four hundred nine thousand, eight hundred twenty-three".