400044350 has 12 divisors (see below), whose sum is σ = 744082584. Its totient is φ = 160017720.

The previous prime is 400044349. The next prime is 400044353. The reversal of 400044350 is 53440004.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400044353) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4000394 + ... + 4000493.

It is an arithmetic number, because the mean of its divisors is an integer number (62006882).

Almost surely, 2^400044350 is an apocalyptic number.

400044350 is a deficient number, since it is larger than the sum of its proper divisors (344038234).

400044350 is a wasteful number, since it uses less digits than its factorization.

400044350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8000899 (or 8000894 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 400044350 is about 20001.1087192685. The cubic root of 400044350 is about 736.8335298545.

Adding to 400044350 its reverse (53440004), we get a palindrome (453484354).

The spelling of 400044350 in words is "four hundred million, forty-four thousand, three hundred fifty".