401894808 has 64 divisors (see below), whose sum is σ = 1161216000. Its totient is φ = 113532672.

The previous prime is 401894803. The next prime is 401894827. The reversal of 401894808 is 808498104.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 401894808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401894803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1513 + ... + 28391.

It is an arithmetic number, because the mean of its divisors is an integer number (18144000).

Almost surely, 2^401894808 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 401894808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (580608000).

401894808 is an abundant number, since it is smaller than the sum of its proper divisors (759321192).

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

401894808 is a wasteful number, since it uses less digits than its factorization.

401894808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26984 (or 26980 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 401894808 is about 20047.3142340813. The cubic root of 401894808 is about 737.9678895555.

The spelling of 401894808 in words is "four hundred one million, eight hundred ninety-four thousand, eight hundred eight".