400544014243 has 64 divisors (see below), whose sum is σ = 453272371200. Its totient is φ = 352597639680.

The previous prime is 400544014229. The next prime is 400544014253. The reversal of 400544014243 is 342410445004.

It is a de Polignac number, because none of the positive numbers 2^k-400544014243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (400544014253) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 193592013 + ... + 193594081.

It is an arithmetic number, because the mean of its divisors is an integer number (7082380800).

Almost surely, 2^400544014243 is an apocalyptic number.

400544014243 is a deficient number, since it is larger than the sum of its proper divisors (52728356957).

400544014243 is a wasteful number, since it uses less digits than its factorization.

400544014243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 400544014243 its reverse (342410445004), we get a palindrome (742954459247).

The spelling of 400544014243 in words is "four hundred billion, five hundred forty-four million, fourteen thousand, two hundred forty-three".