400750390426 has 32 divisors (see below), whose sum is σ = 642969774720. Its totient is φ = 186675342336.

The previous prime is 400750390393. The next prime is 400750390457. The reversal of 400750390426 is 624093057004.

It is a happy number.

It is a super-2 number, since 2×400750390426² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1466851 + ... + 1718473.

It is an arithmetic number, because the mean of its divisors is an integer number (20092805460).

Almost surely, 2^400750390426 is an apocalyptic number.

400750390426 is a deficient number, since it is larger than the sum of its proper divisors (242219384294).

400750390426 is a wasteful number, since it uses less digits than its factorization.

400750390426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252118.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 400750390426 in words is "four hundred billion, seven hundred fifty million, three hundred ninety thousand, four hundred twenty-six".