401044212 has 36 divisors (see below), whose sum is σ = 1073384676. Its totient is φ = 125817600.

The previous prime is 401044183. The next prime is 401044213. The reversal of 401044212 is 212440104.

It can be written as a sum of positive squares in 2 ways, for example, as 338412816 + 62631396 = 18396^2 + 7914^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401044213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 327039 + ... + 328262.

It is an arithmetic number, because the mean of its divisors is an integer number (29816241).

Almost surely, 2^401044212 is an apocalyptic number.

It is an amenable number.

401044212 is an abundant number, since it is smaller than the sum of its proper divisors (672340464).

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

401044212 is a wasteful number, since it uses less digits than its factorization.

401044212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655328 (or 655323 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 401044212 is about 20026.0882850346. The cubic root of 401044212 is about 737.4468942705.

Adding to 401044212 its reverse (212440104), we get a palindrome (613484316).

The spelling of 401044212 in words is "four hundred one million, forty-four thousand, two hundred twelve".