338393939 has 6 divisors (see below), whose sum is σ = 366426756. Its totient is φ = 312363480.

The previous prime is 338393927. The next prime is 338393977. The reversal of 338393939 is 939393833.

338393939 is nontrivially palindromic in base 6.

It is a de Polignac number, because none of the positive numbers 2^k-338393939 is a prime.

It is a super-2 number, since 2×338393939² = 229020915903871442, which contains 22 as substring.

It is a Duffinian number.

338393939 is a modest number, since divided by 393939 gives 338 as remainder.

It is not an unprimeable number, because it can be changed into a prime (338393989) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1000997 + ... + 1001334.

It is an arithmetic number, because the mean of its divisors is an integer number (61071126).

Almost surely, 2^338393939 is an apocalyptic number.

338393939 is a deficient number, since it is larger than the sum of its proper divisors (28032817).

338393939 is a wasteful number, since it uses less digits than its factorization.

338393939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002357 (or 2002344 counting only the distinct ones).

The product of its digits is 1417176, while the sum is 50.

The square root of 338393939 is about 18395.4869193506. The cubic root of 338393939 is about 696.8524938176.

The spelling of 338393939 in words is "three hundred thirty-eight million, three hundred ninety-three thousand, nine hundred thirty-nine".