404205045 has 16 divisors (see below), whose sum is σ = 669029760. Its totient is φ = 208142144.

The previous prime is 404204989. The next prime is 404205071. The reversal of 404205045 is 540502404.

It is a cyclic number.

It is not a de Polignac number, because 404205045 - 2⁸ = 404204789 is a prime.

It is a super-3 number, since 3×404205045³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 464169 + ... + 465038.

It is an arithmetic number, because the mean of its divisors is an integer number (41814360).

Almost surely, 2^404205045 is an apocalyptic number.

It is an amenable number.

404205045 is a deficient number, since it is larger than the sum of its proper divisors (264824715).

404205045 is a wasteful number, since it uses less digits than its factorization.

404205045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929244.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 404205045 is about 20104.8512802259. The cubic root of 404205045 is about 739.3792243332.

Adding to 404205045 its reverse (540502404), we get a palindrome (944707449).

The spelling of 404205045 in words is "four hundred four million, two hundred five thousand, forty-five".