39974317 has 2 divisors, whose sum is σ = 39974318. Its totient is φ = 39974316.

The previous prime is 39974287. The next prime is 39974321. The reversal of 39974317 is 71347993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39175081 + 799236 = 6259^2 + 894^2 .

It is an emirp because it is prime and its reverse (71347993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39974317 - 2⁷ = 39974189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39971317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19987158 + 19987159.

It is an arithmetic number, because the mean of its divisors is an integer number (19987159).

Almost surely, 2^39974317 is an apocalyptic number.

It is an amenable number.

39974317 is a deficient number, since it is larger than the sum of its proper divisors (1).

39974317 is an equidigital number, since it uses as much as digits as its factorization.

39974317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 43.

The square root of 39974317 is about 6322.5245748830. The cubic root of 39974317 is about 341.9219781437.

The spelling of 39974317 in words is "thirty-nine million, nine hundred seventy-four thousand, three hundred seventeen".