401384 has 16 divisors (see below), whose sum is σ = 760320. Its totient is φ = 198640.

The previous prime is 401381. The next prime is 401393. The reversal of 401384 is 483104.

401384 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×401384² = 322218230912, which contains 22 as substring.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (401381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 857 + ... + 1239.

It is an arithmetic number, because the mean of its divisors is an integer number (47520).

2⁴⁰¹³⁸⁴ is an apocalyptic number.

It is an amenable number.

401384 is a deficient number, since it is larger than the sum of its proper divisors (358936).

401384 is a wasteful number, since it uses less digits than its factorization.

401384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 401384 is about 633.5487352998. The cubic root of 401384 is about 73.7655104790.

Adding to 401384 its reverse (483104), we get a palindrome (884488).

The spelling of 401384 in words is "four hundred one thousand, three hundred eighty-four".