400044205 has 16 divisors (see below), whose sum is σ = 524369664. Its totient is φ = 290566080.

The previous prime is 400044193. The next prime is 400044223. The reversal of 400044205 is 502440004.

It is not a de Polignac number, because 400044205 - 2²³ = 391655597 is a prime.

It is a Duffinian number.

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, 42652 + ... + 51178.

It is an arithmetic number, because the mean of its divisors is an integer number (32773104).

Almost surely, 2^400044205 is an apocalyptic number.

It is an amenable number.

400044205 is a deficient number, since it is larger than the sum of its proper divisors (124325459).

400044205 is a wasteful number, since it uses less digits than its factorization.

400044205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9396.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 400044205 is about 20001.1050944692. The cubic root of 400044205 is about 736.8334408304.

Adding to 400044205 its reverse (502440004), we get a palindrome (902484209).

It can be divided in two parts, 4000 and 44205, that added together give a triangular number (48205 = T₃₁₀).

The spelling of 400044205 in words is "four hundred million, forty-four thousand, two hundred five".