400444412 has 12 divisors (see below), whose sum is σ = 724942680. Its totient is φ = 193317936.

The previous prime is 400444411. The next prime is 400444433. The reversal of 400444412 is 214444004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400444411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1725938 + ... + 1726169.

It is an arithmetic number, because the mean of its divisors is an integer number (60411890).

Almost surely, 2^400444412 is an apocalyptic number.

It is an amenable number.

400444412 is a deficient number, since it is larger than the sum of its proper divisors (324498268).

400444412 is a wasteful number, since it uses less digits than its factorization.

400444412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3452140 (or 3452138 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 400444412 is about 20011.1072157440. The cubic root of 400444412 is about 737.0790700354.

Adding to 400444412 its reverse (214444004), we get a palindrome (614888416).

The spelling of 400444412 in words is "four hundred million, four hundred forty-four thousand, four hundred twelve".