401023444 has 12 divisors (see below), whose sum is σ = 705354804. Its totient is φ = 199493504.

The previous prime is 401023433. The next prime is 401023451. The reversal of 401023444 is 444320104.

It can be written as a sum of positive squares in 2 ways, for example, as 369100944 + 31922500 = 19212^2 + 5650^2 .

It is a super-3 number, since 3×401023444³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

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, 253669 + ... + 255244.

It is an arithmetic number, because the mean of its divisors is an integer number (58779567).

Almost surely, 2^401023444 is an apocalyptic number.

It is an amenable number.

401023444 is a deficient number, since it is larger than the sum of its proper divisors (304331360).

401023444 is a wasteful number, since it uses less digits than its factorization.

401023444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509114 (or 509112 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 401023444 is about 20025.5697546911. The cubic root of 401023444 is about 737.4341645339.

Adding to 401023444 its reverse (444320104), we get a palindrome (845343548).

The spelling of 401023444 in words is "four hundred one million, twenty-three thousand, four hundred forty-four".