401322444 has 12 divisors (see below), whose sum is σ = 936419064. Its totient is φ = 133774144.

The previous prime is 401322437. The next prime is 401322479. The reversal of 401322444 is 444223104.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×401322444² = 322119408116266272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16721757 + ... + 16721780.

It is an arithmetic number, because the mean of its divisors is an integer number (78034922).

Almost surely, 2^401322444 is an apocalyptic number.

It is an amenable number.

401322444 is an abundant number, since it is smaller than the sum of its proper divisors (535096620).

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

401322444 is a wasteful number, since it uses less digits than its factorization.

401322444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33443544 (or 33443542 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 401322444 is about 20033.0338191698. The cubic root of 401322444 is about 737.6173940865.

Adding to 401322444 its reverse (444223104), we get a palindrome (845545548).

The spelling of 401322444 in words is "four hundred one million, three hundred twenty-two thousand, four hundred forty-four".