504040405 has 16 divisors (see below), whose sum is σ = 663303168. Its totient is φ = 364648000.

The previous prime is 504040393. The next prime is 504040451.

504040405 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 504040405 - 2²³ = 495651797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13486 + ... + 34495.

It is an arithmetic number, because the mean of its divisors is an integer number (41456448).

Almost surely, 2^504040405 is an apocalyptic number.

504040405 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

504040405 is a deficient number, since it is larger than the sum of its proper divisors (159262763).

504040405 is a wasteful number, since it uses less digits than its factorization.

504040405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48188.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 504040405 is about 22450.8441934819. The cubic root of 504040405 is about 795.8327073875.

The spelling of 504040405 in words is "five hundred four million, forty thousand, four hundred five".