401144022 has 16 divisors (see below), whose sum is σ = 891431280. Its totient is φ = 133714656.

The previous prime is 401144021. The next prime is 401144027. The reversal of 401144022 is 220441104.

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

It is a junction number, because it is equal to n+sod(n) for n = 401143986 and 401144004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401144021) 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, 3714243 + ... + 3714350.

It is an arithmetic number, because the mean of its divisors is an integer number (55714455).

Almost surely, 2^401144022 is an apocalyptic number.

401144022 is an abundant number, since it is smaller than the sum of its proper divisors (490287258).

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

401144022 is a wasteful number, since it uses less digits than its factorization.

401144022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7428604 (or 7428598 counting only the distinct ones).

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

The square root of 401144022 is about 20028.5801294051. The cubic root of 401144022 is about 737.5080666359.

Adding to 401144022 its reverse (220441104), we get a palindrome (621585126).

The spelling of 401144022 in words is "four hundred one million, one hundred forty-four thousand, twenty-two".