400040004043 has 8 divisors (see below), whose sum is σ = 408071732112. Its totient is φ = 392068893216.

The previous prime is 400040003983. The next prime is 400040004097. The reversal of 400040004043 is 340400040004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400040004043 - 2¹³ = 400039995851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400040004043.

It is not an unprimeable number, because it can be changed into a prime (400040004743) 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 7 ways as a sum of consecutive naturals, for example, 15140980 + ... + 15167377.

It is an arithmetic number, because the mean of its divisors is an integer number (51008966514).

Almost surely, 2^400040004043 is an apocalyptic number.

400040004043 is a deficient number, since it is larger than the sum of its proper divisors (8031728069).

400040004043 is a wasteful number, since it uses less digits than its factorization.

400040004043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30308621.

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 400040004043 its reverse (340400040004), we get a palindrome (740440044047).

The spelling of 400040004043 in words is "four hundred billion, forty million, four thousand, forty-three".