401766894 has 48 divisors (see below), whose sum is σ = 919835280. Its totient is φ = 126385920.

The previous prime is 401766863. The next prime is 401766901. The reversal of 401766894 is 498667104.

It is a super-2 number, since 2×401766894² = 322833274228814472, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92614 + ... + 96854.

It is an arithmetic number, because the mean of its divisors is an integer number (19163235).

Almost surely, 2^401766894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401766894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (459917640).

401766894 is an abundant number, since it is smaller than the sum of its proper divisors (518068386).

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

401766894 is a wasteful number, since it uses less digits than its factorization.

401766894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545 (or 4542 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 401766894 is about 20044.1236775270. The cubic root of 401766894 is about 737.8895884352.

The spelling of 401766894 in words is "four hundred one million, seven hundred sixty-six thousand, eight hundred ninety-four".