401336404 has 24 divisors (see below), whose sum is σ = 807488640. Its totient is φ = 170969376.

The previous prime is 401336401. The next prime is 401336461. The reversal of 401336404 is 404633104.

It is a happy number.

It is a super-2 number, since 2×401336404² = 322141818351302432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401336401) 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 7 ways as a sum of consecutive naturals, for example, 38239 + ... + 47590.

It is an arithmetic number, because the mean of its divisors is an integer number (33645360).

Almost surely, 2^401336404 is an apocalyptic number.

It is an amenable number.

401336404 is an abundant number, since it is smaller than the sum of its proper divisors (406152236).

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

401336404 is a wasteful number, since it uses less digits than its factorization.

401336404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86007 (or 86005 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 401336404 is about 20033.3822406502. The cubic root of 401336404 is about 737.6259466603.

Adding to 401336404 its reverse (404633104), we get a palindrome (805969508).

The spelling of 401336404 in words is "four hundred one million, three hundred thirty-six thousand, four hundred four".