440001331 has 12 divisors (see below), whose sum is σ = 558369720. Its totient is φ = 342857760.

The previous prime is 440001307. The next prime is 440001337. The reversal of 440001331 is 133100044.

It is not a de Polignac number, because 440001331 - 2⁷ = 440001203 is a prime.

It is a super-2 number, since 2×440001331² = 387202342563543122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440001337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 407626 + ... + 408703.

It is an arithmetic number, because the mean of its divisors is an integer number (46530810).

Almost surely, 2^440001331 is an apocalyptic number.

440001331 is a deficient number, since it is larger than the sum of its proper divisors (118368389).

440001331 is a wasteful number, since it uses less digits than its factorization.

440001331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816354 (or 816347 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 440001331 is about 20976.2086898467. The cubic root of 440001331 is about 760.5912590803.

Adding to 440001331 its reverse (133100044), we get a palindrome (573101375).

It can be divided in two parts, 4400013 and 31, that added together give a palindrome (4400044).

The spelling of 440001331 in words is "four hundred forty million, one thousand, three hundred thirty-one".