404051005 has 32 divisors (see below), whose sum is σ = 523480320. Its totient is φ = 298636800.

The previous prime is 404051003. The next prime is 404051069. The reversal of 404051005 is 500150404.

404051005 = 6352² + 6353² + ... + 6361².

It is not a de Polignac number, because 404051005 - 2¹ = 404051003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404051003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 499041 + ... + 499849.

It is an arithmetic number, because the mean of its divisors is an integer number (16358760).

Almost surely, 2^404051005 is an apocalyptic number.

It is an amenable number.

404051005 is a deficient number, since it is larger than the sum of its proper divisors (119429315).

404051005 is a wasteful number, since it uses less digits than its factorization.

404051005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 404051005 is about 20101.0199989951. The cubic root of 404051005 is about 739.2852881423.

The spelling of 404051005 in words is "four hundred four million, fifty-one thousand, five".