400444234 has 8 divisors (see below), whose sum is σ = 602883648. Its totient is φ = 199483020.

The previous prime is 400444223. The next prime is 400444241. The reversal of 400444234 is 432444004.

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

It is a junction number, because it is equal to n+sod(n) for n = 400444199 and 400444208.

It is an unprimeable number.

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, 368872 + ... + 369955.

It is an arithmetic number, because the mean of its divisors is an integer number (75360456).

Almost surely, 2^400444234 is an apocalyptic number.

400444234 is a deficient number, since it is larger than the sum of its proper divisors (202439414).

400444234 is a wasteful number, since it uses less digits than its factorization.

400444234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739100.

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 400444234 is about 20011.1027682134. The cubic root of 400444234 is about 737.0789608233.

Adding to 400444234 its reverse (432444004), we get a palindrome (832888238).

The spelling of 400444234 in words is "four hundred million, four hundred forty-four thousand, two hundred thirty-four".