440939 has 2 divisors, whose sum is σ = 440940. Its totient is φ = 440938.

The previous prime is 440911. The next prime is 440941. The reversal of 440939 is 939044.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 440939 - 2⁸ = 440683 is a prime.

Together with 440941, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (440959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220469 + 220470.

It is an arithmetic number, because the mean of its divisors is an integer number (220470).

2⁴⁴⁰⁹³⁹ is an apocalyptic number.

440939 is a deficient number, since it is larger than the sum of its proper divisors (1).

440939 is an equidigital number, since it uses as much as digits as its factorization.

440939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 440939 is about 664.0323787286. The cubic root of 440939 is about 76.1131164138.

The spelling of 440939 in words is "four hundred forty thousand, nine hundred thirty-nine".