404330939 has 4 divisors (see below), whose sum is σ = 404466600. Its totient is φ = 404195280.

The previous prime is 404330933. The next prime is 404330951. The reversal of 404330939 is 939033404.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404330939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404330899 and 404330908.

It is not an unprimeable number, because it can be changed into a prime (404330933) 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, 63257 + ... + 69354.

It is an arithmetic number, because the mean of its divisors is an integer number (101116650).

Almost surely, 2^404330939 is an apocalyptic number.

404330939 is a deficient number, since it is larger than the sum of its proper divisors (135661).

404330939 is a wasteful number, since it uses less digits than its factorization.

404330939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135660.

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 404330939 is about 20107.9819723412. The cubic root of 404330939 is about 739.4559788971.

The spelling of 404330939 in words is "four hundred four million, three hundred thirty thousand, nine hundred thirty-nine".