404049 has 4 divisors (see below), whose sum is σ = 538736. Its totient is φ = 269364.

The previous prime is 404029. The next prime is 404051. The reversal of 404049 is 940404.

It is a happy number.

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 not a de Polignac number, because 404049 - 2⁵ = 404017 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404009) 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, 67339 + ... + 67344.

It is an arithmetic number, because the mean of its divisors is an integer number (134684).

2⁴⁰⁴⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

404049 is a deficient number, since it is larger than the sum of its proper divisors (134687).

404049 is a wasteful number, since it uses less digits than its factorization.

404049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134686.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 404049 is about 635.6484877666. The cubic root of 404049 is about 73.9284065302.

The spelling of 404049 in words is "four hundred four thousand, forty-nine".