440047 has 2 divisors, whose sum is σ = 440048. Its totient is φ = 440046.

The previous prime is 440039. The next prime is 440087. The reversal of 440047 is 740044.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 440047 - 2³ = 440039 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220023 + 220024.

It is an arithmetic number, because the mean of its divisors is an integer number (220024).

2⁴⁴⁰⁰⁴⁷ is an apocalyptic number.

440047 is a deficient number, since it is larger than the sum of its proper divisors (1).

440047 is an equidigital number, since it uses as much as digits as its factorization.

440047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 440047 is about 663.3603847080. The cubic root of 440047 is about 76.0617572819.

The spelling of 440047 in words is "four hundred forty thousand, forty-seven", and thus it is an iban number.