400444532 has 12 divisors (see below), whose sum is σ = 737661120. Its totient is φ = 189684216.

The previous prime is 400444531. The next prime is 400444543. The reversal of 400444532 is 235444004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400444531) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2634428 + ... + 2634579.

It is an arithmetic number, because the mean of its divisors is an integer number (61471760).

Almost surely, 2^400444532 is an apocalyptic number.

It is an amenable number.

400444532 is a deficient number, since it is larger than the sum of its proper divisors (337216588).

400444532 is a wasteful number, since it uses less digits than its factorization.

400444532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5269030 (or 5269028 counting only the distinct ones).

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

The square root of 400444532 is about 20011.1102140786. The cubic root of 400444532 is about 737.0791436615.

Adding to 400444532 its reverse (235444004), we get a palindrome (635888536).

The spelling of 400444532 in words is "four hundred million, four hundred forty-four thousand, five hundred thirty-two".