39445673 has 2 divisors, whose sum is σ = 39445674. Its totient is φ = 39445672.

The previous prime is 39445669. The next prime is 39445687. The reversal of 39445673 is 37654493.

39445673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39400729 + 44944 = 6277^2 + 212^2 .

It is a cyclic number.

It is not a de Polignac number, because 39445673 - 2² = 39445669 is a prime.

It is a super-2 number, since 2×39445673² = 3111922236845858, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 39445673.

It is not a weakly prime, because it can be changed into another prime (39445633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19722836 + 19722837.

It is an arithmetic number, because the mean of its divisors is an integer number (19722837).

Almost surely, 2^39445673 is an apocalyptic number.

It is an amenable number.

39445673 is a deficient number, since it is larger than the sum of its proper divisors (1).

39445673 is an equidigital number, since it uses as much as digits as its factorization.

39445673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 41.

The square root of 39445673 is about 6280.5790338153. The cubic root of 39445673 is about 340.4080251380.

The spelling of 39445673 in words is "thirty-nine million, four hundred forty-five thousand, six hundred seventy-three".