400722040040 has 32 divisors (see below), whose sum is σ = 1030428103680. Its totient is φ = 137390413632.

The previous prime is 400722040021. The next prime is 400722040097. The reversal of 400722040040 is 40040227004.

It is a junction number, because it is equal to n+sod(n) for n = 400722039988 and 400722040015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715574792 + ... + 715575351.

It is an arithmetic number, because the mean of its divisors is an integer number (32200878240).

Almost surely, 2^400722040040 is an apocalyptic number.

400722040040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400722040040 is an abundant number, since it is smaller than the sum of its proper divisors (629706063640).

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

400722040040 is a wasteful number, since it uses less digits than its factorization.

400722040040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431150161 (or 1431150157 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 23.

Adding to 400722040040 its reverse (40040227004), we get a palindrome (440762267044).

The spelling of 400722040040 in words is "four hundred billion, seven hundred twenty-two million, forty thousand, forty".