401440401332 has 6 divisors (see below), whose sum is σ = 702520702338. Its totient is φ = 200720200664.

The previous prime is 401440401331. The next prime is 401440401367. The reversal of 401440401332 is 233104044104.

It can be written as a sum of positive squares in only one way, i.e., 246766523536 + 154673877796 = 496756^2 + 393286^2 .

It is a super-2 number, since 2×401440401332² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401440401331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50180050163 + ... + 50180050170.

It is an arithmetic number, because the mean of its divisors is an integer number (117086783723).

Almost surely, 2^401440401332 is an apocalyptic number.

It is an amenable number.

401440401332 is a deficient number, since it is larger than the sum of its proper divisors (301080301006).

401440401332 is a wasteful number, since it uses less digits than its factorization.

401440401332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100360100337 (or 100360100335 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 401440401332 its reverse (233104044104), we get a palindrome (634544445436).

The spelling of 401440401332 in words is "four hundred one billion, four hundred forty million, four hundred one thousand, three hundred thirty-two".