404323039 has 4 divisors (see below), whose sum is σ = 405598824. Its totient is φ = 403047256.

The previous prime is 404323037. The next prime is 404323069. The reversal of 404323039 is 930323404.

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

It is a cyclic number.

It is not a de Polignac number, because 404323039 - 2¹ = 404323037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404322998 and 404323016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404323033) 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 3 ways as a sum of consecutive naturals, for example, 637417 + ... + 638050.

It is an arithmetic number, because the mean of its divisors is an integer number (101399706).

Almost surely, 2^404323039 is an apocalyptic number.

404323039 is a deficient number, since it is larger than the sum of its proper divisors (1275785).

404323039 is a wasteful number, since it uses less digits than its factorization.

404323039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275784.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 404323039 is about 20107.7855319774. The cubic root of 404323039 is about 739.4511629244.

The spelling of 404323039 in words is "four hundred four million, three hundred twenty-three thousand, thirty-nine".