400234431403400 has 96 divisors (see below), whose sum is σ = 1015154354400480. Its totient is φ = 145537743552000.

The previous prime is 400234431403349. The next prime is 400234431403409. The reversal of 400234431403400 is 4304134432004.

It is not an unprimeable number, because it can be changed into a prime (400234431403409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159555692 + ... + 162044708.

It is an arithmetic number, because the mean of its divisors is an integer number (10574524525005).

Almost surely, 2^{400234431403400} is an apocalyptic number.

400234431403400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400234431403400 is an abundant number, since it is smaller than the sum of its proper divisors (614919922997080).

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

400234431403400 is a wasteful number, since it uses less digits than its factorization.

400234431403400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562135 (or 2562126 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 400234431403400 its reverse (4304134432004), we get a palindrome (404538565835404).

The spelling of 400234431403400 in words is "four hundred trillion, two hundred thirty-four billion, four hundred thirty-one million, four hundred three thousand, four hundred".