440263231 has 16 divisors (see below), whose sum is σ = 472268160. Its totient is φ = 409194720.

The previous prime is 440263223. The next prime is 440263237. The reversal of 440263231 is 132362044.

It is a cyclic number.

It is not a de Polignac number, because 440263231 - 2³ = 440263223 is a prime.

It is a super-3 number, since 3×440263231³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 440263196 and 440263205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440263237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402996 + ... + 404086.

It is an arithmetic number, because the mean of its divisors is an integer number (29516760).

Almost surely, 2^440263231 is an apocalyptic number.

440263231 is a deficient number, since it is larger than the sum of its proper divisors (32004929).

440263231 is a wasteful number, since it uses less digits than its factorization.

440263231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 440263231 is about 20982.4505480175. The cubic root of 440263231 is about 760.7421369125.

The spelling of 440263231 in words is "four hundred forty million, two hundred sixty-three thousand, two hundred thirty-one".