440066331 has 32 divisors (see below), whose sum is σ = 660633600. Its totient is φ = 289500480.

The previous prime is 440066317. The next prime is 440066339. The reversal of 440066331 is 133660044.

It is not a de Polignac number, because 440066331 - 2⁷ = 440066203 is a prime.

It is a super-2 number, since 2×440066331² = 387316751359603122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 440066295 and 440066304.

It is not an unprimeable number, because it can be changed into a prime (440066339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1002210 + ... + 1002648.

It is an arithmetic number, because the mean of its divisors is an integer number (20644800).

Almost surely, 2^440066331 is an apocalyptic number.

440066331 is a deficient number, since it is larger than the sum of its proper divisors (220567269).

440066331 is a wasteful number, since it uses less digits than its factorization.

440066331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 440066331 is about 20977.7580069940. The cubic root of 440066331 is about 760.6287104803.

The spelling of 440066331 in words is "four hundred forty million, sixty-six thousand, three hundred thirty-one".