404749 has 4 divisors (see below), whose sum is σ = 408064. Its totient is φ = 401436.

The previous prime is 404713. The next prime is 404773. The reversal of 404749 is 947404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 404749 - 2¹⁵ = 371981 is a prime.

It is a Duffinian number.

404749 is a lucky number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1467 + ... + 1720.

It is an arithmetic number, because the mean of its divisors is an integer number (102016).

2⁴⁰⁴⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

404749 is a deficient number, since it is larger than the sum of its proper divisors (3315).

404749 is a wasteful number, since it uses less digits than its factorization.

404749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 404749 is about 636.1988682794. The cubic root of 404749 is about 73.9710746459.

It can be divided in two parts, 4047 and 49, that added together give a 12-th power (4096 = 2¹²).

The spelling of 404749 in words is "four hundred four thousand, seven hundred forty-nine".