445107973 has 2 divisors, whose sum is σ = 445107974. Its totient is φ = 445107972.

The previous prime is 445107967. The next prime is 445107997. The reversal of 445107973 is 379701544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 434597409 + 10510564 = 20847^2 + 3242^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445107973 is a prime.

It is a super-2 number, since 2×445107973² = 396242215256337458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445107913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222553986 + 222553987.

It is an arithmetic number, because the mean of its divisors is an integer number (222553987).

Almost surely, 2^445107973 is an apocalyptic number.

It is an amenable number.

445107973 is a deficient number, since it is larger than the sum of its proper divisors (1).

445107973 is an equidigital number, since it uses as much as digits as its factorization.

445107973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 445107973 is about 21097.5821600486. The cubic root of 445107973 is about 763.5224148256.

The spelling of 445107973 in words is "four hundred forty-five million, one hundred seven thousand, nine hundred seventy-three".