400000244 has 24 divisors (see below), whose sum is σ = 800589888. Its totient is φ = 171302400.

The previous prime is 400000193. The next prime is 400000261. The reversal of 400000244 is 442000004.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 40367 + ... + 49289.

It is an arithmetic number, because the mean of its divisors is an integer number (33357912).

Almost surely, 2^400000244 is an apocalyptic number.

It is an amenable number.

400000244 is an abundant number, since it is smaller than the sum of its proper divisors (400589644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400000244 is a wasteful number, since it uses less digits than its factorization.

400000244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10535 (or 10533 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 400000244 is about 20000.0060999991. The cubic root of 400000244 is about 736.8064495453.

Adding to 400000244 its reverse (442000004), we get a palindrome (842000248).

The spelling of 400000244 in words is "four hundred million, two hundred forty-four", and thus it is an aban number.