400434344 has 32 divisors (see below), whose sum is σ = 764510400. Its totient is φ = 196584960.

The previous prime is 400434343. The next prime is 400434373. The reversal of 400434344 is 443434004.

It is not an unprimeable number, because it can be changed into a prime (400434343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191384 + ... + 193464.

It is an arithmetic number, because the mean of its divisors is an integer number (23890950).

Almost surely, 2^400434344 is an apocalyptic number.

It is an amenable number.

400434344 is a deficient number, since it is larger than the sum of its proper divisors (364076056).

400434344 is a wasteful number, since it uses less digits than its factorization.

400434344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513 (or 2509 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 400434344 is about 20010.8556538695. The cubic root of 400434344 is about 737.0728927533.

Adding to 400434344 its reverse (443434004), we get a palindrome (843868348).

The spelling of 400434344 in words is "four hundred million, four hundred thirty-four thousand, three hundred forty-four".