400040400041 has 4 divisors (see below), whose sum is σ = 400050649284. Its totient is φ = 400030150800.

The previous prime is 400040399981. The next prime is 400040400047. The reversal of 400040400041 is 140004040004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 357629116441 + 42411283600 = 598021^2 + 205940^2 .

It is a cyclic number.

It is not a de Polignac number, because 400040400041 - 2²⁶ = 399973291177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400040399992 and 400040400019.

It is not an unprimeable number, because it can be changed into a prime (400040400047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5065850 + ... + 5144211.

It is an arithmetic number, because the mean of its divisors is an integer number (100012662321).

Almost surely, 2^400040400041 is an apocalyptic number.

It is an amenable number.

400040400041 is a deficient number, since it is larger than the sum of its proper divisors (10249243).

400040400041 is a wasteful number, since it uses less digits than its factorization.

400040400041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10249242.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 400040400041 its reverse (140004040004), we get a palindrome (540044440045).

The spelling of 400040400041 in words is "four hundred billion, forty million, four hundred thousand, forty-one".