445242673 has 2 divisors, whose sum is σ = 445242674. Its totient is φ = 445242672.

The previous prime is 445242659. The next prime is 445242689. The reversal of 445242673 is 376242544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320875569 + 124367104 = 17913^2 + 11152^2 .

It is a cyclic number.

It is not a de Polignac number, because 445242673 - 2⁵ = 445242641 is a prime.

It is not a weakly prime, because it can be changed into another prime (445242653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222621336 + 222621337.

It is an arithmetic number, because the mean of its divisors is an integer number (222621337).

Almost surely, 2^445242673 is an apocalyptic number.

It is an amenable number.

445242673 is a deficient number, since it is larger than the sum of its proper divisors (1).

445242673 is an equidigital number, since it uses as much as digits as its factorization.

445242673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 37.

The square root of 445242673 is about 21100.7742275017. The cubic root of 445242673 is about 763.5994269236.

The spelling of 445242673 in words is "four hundred forty-five million, two hundred forty-two thousand, six hundred seventy-three".