400044004039 has 8 divisors (see below), whose sum is σ = 422427345840. Its totient is φ = 377793501696.

The previous prime is 400044004037. The next prime is 400044004057. The reversal of 400044004039 is 930400440004.

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 400044004039 - 2¹ = 400044004037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400044003998 and 400044004016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400044004037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33203674 + ... + 33215719.

It is an arithmetic number, because the mean of its divisors is an integer number (52803418230).

Almost surely, 2^400044004039 is an apocalyptic number.

400044004039 is a deficient number, since it is larger than the sum of its proper divisors (22383341801).

400044004039 is a wasteful number, since it uses less digits than its factorization.

400044004039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66419729.

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 400044004039 in words is "four hundred billion, forty-four million, four thousand, thirty-nine".