400255344 has 200 divisors, whose sum is σ = 1262316528. Its totient is φ = 121927680.

The previous prime is 400255333. The next prime is 400255367. The reversal of 400255344 is 443552004.

400255344 is a `hidden beast` number, since 400 + 255 + 3 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 39 ways as a sum of consecutive naturals, for example, 814939 + ... + 815429.

Almost surely, 2^400255344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400255344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (631158264).

400255344 is an abundant number, since it is smaller than the sum of its proper divisors (862061184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400255344 is a wasteful number, since it uses less digits than its factorization.

400255344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 400255344 is about 20006.3825815663. The cubic root of 400255344 is about 736.9630489352.

It can be divided in two parts, 40025 and 5344, that added together give a square (45369 = 213²).

The spelling of 400255344 in words is "four hundred million, two hundred fifty-five thousand, three hundred forty-four".