400006440046 has 8 divisors (see below), whose sum is σ = 600034017240. Its totient is φ = 199995100968.

The previous prime is 400006440023. The next prime is 400006440059. The reversal of 400006440046 is 640044600004.

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

It is a junction number, because it is equal to n+sod(n) for n = 400006439996 and 400006440023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3997756 + ... + 4096591.

It is an arithmetic number, because the mean of its divisors is an integer number (75004252155).

Almost surely, 2^400006440046 is an apocalyptic number.

400006440046 is a deficient number, since it is larger than the sum of its proper divisors (200027577194).

400006440046 is a wasteful number, since it uses less digits than its factorization.

400006440046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8119058.

The product of its (nonzero) digits is 9216, while the sum is 28.

The spelling of 400006440046 in words is "four hundred billion, six million, four hundred forty thousand, forty-six".