404739 has 6 divisors (see below), whose sum is σ = 584636. Its totient is φ = 269820.

The previous prime is 404713. The next prime is 404773. The reversal of 404739 is 937404.

It is not a de Polignac number, because 404739 - 2⁸ = 404483 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 404739.

It is not an unprimeable number, because it can be changed into a prime (404779) 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, 22477 + ... + 22494.

2⁴⁰⁴⁷³⁹ is an apocalyptic number.

404739 is a deficient number, since it is larger than the sum of its proper divisors (179897).

404739 is a wasteful number, since it uses less digits than its factorization.

404739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44977 (or 44974 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 404739 is about 636.1910090531. The cubic root of 404739 is about 73.9704654479.

The spelling of 404739 in words is "four hundred four thousand, seven hundred thirty-nine".