400123244 has 12 divisors (see below), whose sum is σ = 700375704. Its totient is φ = 200015904.

The previous prime is 400123219. The next prime is 400123277. The reversal of 400123244 is 442321004.

It is a super-2 number, since 2×400123244² = 320197220778167072, which contains 22 as substring.

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, 15107 + ... + 32069.

It is an arithmetic number, because the mean of its divisors is an integer number (58364642).

Almost surely, 2^400123244 is an apocalyptic number.

It is an amenable number.

400123244 is a deficient number, since it is larger than the sum of its proper divisors (300252460).

400123244 is a wasteful number, since it uses less digits than its factorization.

400123244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22864 (or 22862 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 400123244 is about 20003.0808627071. The cubic root of 400123244 is about 736.8819644206.

Adding to 400123244 its reverse (442321004), we get a palindrome (842444248).

The spelling of 400123244 in words is "four hundred million, one hundred twenty-three thousand, two hundred forty-four".