39445313 has 2 divisors, whose sum is σ = 39445314. Its totient is φ = 39445312.

The previous prime is 39445297. The next prime is 39445327. The reversal of 39445313 is 31354493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32855824 + 6589489 = 5732^2 + 2567^2 .

It is a cyclic number.

It is not a de Polignac number, because 39445313 - 2⁴ = 39445297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39445313.

It is not a weakly prime, because it can be changed into another prime (39445363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19722656 + 19722657.

It is an arithmetic number, because the mean of its divisors is an integer number (19722657).

Almost surely, 2^39445313 is an apocalyptic number.

It is an amenable number.

39445313 is a deficient number, since it is larger than the sum of its proper divisors (1).

39445313 is an equidigital number, since it uses as much as digits as its factorization.

39445313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 32.

The square root of 39445313 is about 6280.5503739720. The cubic root of 39445313 is about 340.4069895596.

The spelling of 39445313 in words is "thirty-nine million, four hundred forty-five thousand, three hundred thirteen".