400344452 has 12 divisors (see below), whose sum is σ = 701083740. Its totient is φ = 200034816.

The previous prime is 400344443. The next prime is 400344467. The reversal of 400344452 is 254443004.

It can be written as a sum of positive squares in 2 ways, for example, as 232745536 + 167598916 = 15256^2 + 12946^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27653 + ... + 39564.

It is an arithmetic number, because the mean of its divisors is an integer number (58423645).

Almost surely, 2^400344452 is an apocalyptic number.

It is an amenable number.

400344452 is a deficient number, since it is larger than the sum of its proper divisors (300739288).

400344452 is a wasteful number, since it uses less digits than its factorization.

400344452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68710 (or 68708 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 400344452 is about 20008.6094469356. The cubic root of 400344452 is about 737.0177343851.

Adding to 400344452 its reverse (254443004), we get a palindrome (654787456).

The spelling of 400344452 in words is "four hundred million, three hundred forty-four thousand, four hundred fifty-two".