401001144 has 32 divisors (see below), whose sum is σ = 1025819520. Its totient is φ = 130558176.

The previous prime is 401001121. The next prime is 401001193. The reversal of 401001144 is 441100104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193252 + ... + 195315.

It is an arithmetic number, because the mean of its divisors is an integer number (32056860).

Almost surely, 2^401001144 is an apocalyptic number.

It is an amenable number.

401001144 is an abundant number, since it is smaller than the sum of its proper divisors (624818376).

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

401001144 is a wasteful number, since it uses less digits than its factorization.

401001144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388619 (or 388615 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 401001144 is about 20025.0129587973. The cubic root of 401001144 is about 737.4204952694.

Adding to 401001144 its reverse (441100104), we get a palindrome (842101248).

The spelling of 401001144 in words is "four hundred one million, one thousand, one hundred forty-four".