401884 has 24 divisors (see below), whose sum is σ = 831488. Its totient is φ = 166320.

The previous prime is 401867. The next prime is 401887. The reversal of 401884 is 488104.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401887) 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, 637 + ... + 1099.

2⁴⁰¹⁸⁸⁴ 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 401884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (415744).

401884 is an abundant number, since it is smaller than the sum of its proper divisors (429604).

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

401884 is a wasteful number, since it uses less digits than its factorization.

401884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 503 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 401884 is about 633.9432151226. The cubic root of 401884 is about 73.7961274202.

Adding to 401884 its reverse (488104), we get a palindrome (889988).

The spelling of 401884 in words is "four hundred one thousand, eight hundred eighty-four".