400440426407 has 8 divisors (see below), whose sum is σ = 458033718432. Its totient is φ = 342944013600.

The previous prime is 400440426367. The next prime is 400440426439. The reversal of 400440426407 is 704624044004.

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 400440426407 - 2¹⁰ = 400440425383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400440426307) 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, 24210944 + ... + 24227477.

It is an arithmetic number, because the mean of its divisors is an integer number (57254214804).

Almost surely, 2^400440426407 is an apocalyptic number.

400440426407 is a deficient number, since it is larger than the sum of its proper divisors (57593292025).

400440426407 is a wasteful number, since it uses less digits than its factorization.

400440426407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48439609.

The product of its (nonzero) digits is 86016, while the sum is 35.

The spelling of 400440426407 in words is "four hundred billion, four hundred forty million, four hundred twenty-six thousand, four hundred seven".