445533973 has 2 divisors, whose sum is σ = 445533974. Its totient is φ = 445533972.

The previous prime is 445533967. The next prime is 445534069. The reversal of 445533973 is 379335544.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297838564 + 147695409 = 17258^2 + 12153^2 .

It is a cyclic number.

It is not a de Polignac number, because 445533973 - 2²⁵ = 411979541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445533173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222766986 + 222766987.

It is an arithmetic number, because the mean of its divisors is an integer number (222766987).

Almost surely, 2^445533973 is an apocalyptic number.

It is an amenable number.

445533973 is a deficient number, since it is larger than the sum of its proper divisors (1).

445533973 is an equidigital number, since it uses as much as digits as its factorization.

445533973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 680400, while the sum is 43.

The square root of 445533973 is about 21107.6756891895. The cubic root of 445533973 is about 763.7659189173.

The spelling of 445533973 in words is "four hundred forty-five million, five hundred thirty-three thousand, nine hundred seventy-three".