401404 has 12 divisors (see below), whose sum is σ = 743904. Its totient is φ = 188864.

The previous prime is 401393. The next prime is 401407. The reversal of 401404 is 404104.

It is a happy number.

It is a super-2 number, since 2×401404² = 322250342432, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2884 + ... + 3019.

It is an arithmetic number, because the mean of its divisors is an integer number (61992).

2⁴⁰¹⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

401404 is a deficient number, since it is larger than the sum of its proper divisors (342500).

401404 is a wasteful number, since it uses less digits than its factorization.

401404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5924 (or 5922 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 401404 is about 633.5645192086. The cubic root of 401404 is about 73.7667356447.

Adding to 401404 its reverse (404104), we get a palindrome (805508).

It can be divided in two parts, 40 and 1404, that added together give a square (1444 = 38²).

The spelling of 401404 in words is "four hundred one thousand, four hundred four", and thus it is an iban number.