400040399995 has 64 divisors (see below), whose sum is σ = 521698060800. Its totient is φ = 293390254080.

The previous prime is 400040399981. The next prime is 400040400047. The reversal of 400040399995 is 599993040004.

It is not a de Polignac number, because 400040399995 - 2⁵ = 400040399963 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 175378255 + ... + 175380535.

It is an arithmetic number, because the mean of its divisors is an integer number (8151532200).

Almost surely, 2^400040399995 is an apocalyptic number.

400040399995 is a deficient number, since it is larger than the sum of its proper divisors (121657660805).

400040399995 is a wasteful number, since it uses less digits than its factorization.

400040399995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728.

The product of its (nonzero) digits is 1574640, while the sum is 52.

It can be divided in two parts, 40004039999 and 5, that added together give a palindrome (40004040004).

The spelling of 400040399995 in words is "four hundred billion, forty million, three hundred ninety-nine thousand, nine hundred ninety-five".