440446243 has 2 divisors, whose sum is σ = 440446244. Its totient is φ = 440446242.

The previous prime is 440446241. The next prime is 440446249. The reversal of 440446243 is 342644044.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 440446243 - 2¹ = 440446241 is a prime.

Together with 440446241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (440446241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220223121 + 220223122.

It is an arithmetic number, because the mean of its divisors is an integer number (220223122).

Almost surely, 2^440446243 is an apocalyptic number.

440446243 is a deficient number, since it is larger than the sum of its proper divisors (1).

440446243 is an equidigital number, since it uses as much as digits as its factorization.

440446243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 31.

The square root of 440446243 is about 20986.8111679693. The cubic root of 440446243 is about 760.8475326873.

The spelling of 440446243 in words is "four hundred forty million, four hundred forty-six thousand, two hundred forty-three".