401022444 has 48 divisors (see below), whose sum is σ = 951487488. Its totient is φ = 131440128.

The previous prime is 401022443. The next prime is 401022463. The reversal of 401022444 is 444220104.

It is a self number, because there is not a number n which added to its sum of digits gives 401022444.

It is not an unprimeable number, because it can be changed into a prime (401022443) 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 15 ways as a sum of consecutive naturals, for example, 193357 + ... + 195419.

It is an arithmetic number, because the mean of its divisors is an integer number (19822656).

Almost surely, 2^401022444 is an apocalyptic number.

It is an amenable number.

401022444 is an abundant number, since it is smaller than the sum of its proper divisors (550465044).

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

401022444 is a wasteful number, since it uses less digits than its factorization.

401022444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334 (or 2332 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 401022444 is about 20025.5447865969. The cubic root of 401022444 is about 737.4335515733.

Adding to 401022444 its reverse (444220104), we get a palindrome (845242548).

The spelling of 401022444 in words is "four hundred one million, twenty-two thousand, four hundred forty-four".