400424440206 has 64 divisors (see below), whose sum is σ = 946973638656. Its totient is φ = 110459397600.

The previous prime is 400424440183. The next prime is 400424440211. The reversal of 400424440206 is 602044424004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204381 + ... + 917943.

It is an arithmetic number, because the mean of its divisors is an integer number (14796463104).

Almost surely, 2^400424440206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400424440206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (473486819328).

400424440206 is an abundant number, since it is smaller than the sum of its proper divisors (546549198450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400424440206 is a wasteful number, since it uses less digits than its factorization.

400424440206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714037.

The product of its (nonzero) digits is 24576, while the sum is 30.

The spelling of 400424440206 in words is "four hundred billion, four hundred twenty-four million, four hundred forty thousand, two hundred six".