401943872 has 56 divisors (see below), whose sum is σ = 884956320. Its totient is φ = 179586560.

The previous prime is 401943853. The next prime is 401943877. The reversal of 401943872 is 278349104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401943877) 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, 36698 + ... + 46374.

Almost surely, 2^401943872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401943872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (442478160).

401943872 is an abundant number, since it is smaller than the sum of its proper divisors (483012448).

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

401943872 is a wasteful number, since it uses less digits than its factorization.

401943872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9759 (or 9749 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 401943872 is about 20048.5379018022. The cubic root of 401943872 is about 737.9979191242.

The spelling of 401943872 in words is "four hundred one million, nine hundred forty-three thousand, eight hundred seventy-two".