400244330 has 8 divisors (see below), whose sum is σ = 720439812. Its totient is φ = 160097728.

The previous prime is 400244297. The next prime is 400244333. The reversal of 400244330 is 33442004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 395651881 + 4592449 = 19891^2 + 2143^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (400244333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20012207 + ... + 20012226.

Almost surely, 2^400244330 is an apocalyptic number.

400244330 is a deficient number, since it is larger than the sum of its proper divisors (320195482).

400244330 is a wasteful number, since it uses less digits than its factorization.

400244330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40024440.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 400244330 is about 20006.1073175168. The cubic root of 400244330 is about 736.9562890958.

Adding to 400244330 its reverse (33442004), we get a palindrome (433686334).

The spelling of 400244330 in words is "four hundred million, two hundred forty-four thousand, three hundred thirty".