445447 has 2 divisors, whose sum is σ = 445448. Its totient is φ = 445446.

The previous prime is 445433. The next prime is 445453. The reversal of 445447 is 744544.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445447 is a prime.

It is a Chen prime.

445447 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222723 + 222724.

It is an arithmetic number, because the mean of its divisors is an integer number (222724).

2⁴⁴⁵⁴⁴⁷ is an apocalyptic number.

445447 is a deficient number, since it is larger than the sum of its proper divisors (1).

445447 is an equidigital number, since it uses as much as digits as its factorization.

445447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8960, while the sum is 28.

The square root of 445447 is about 667.4181597769. The cubic root of 445447 is about 76.3716217256.

It can be divided in two parts, 44544 and 7, that added together give a triangular number (44551 = T₂₉₈).

The spelling of 445447 in words is "four hundred forty-five thousand, four hundred forty-seven".