39040693 has 2 divisors, whose sum is σ = 39040694. Its totient is φ = 39040692.

The previous prime is 39040681. The next prime is 39040711. The reversal of 39040693 is 39604093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26811684 + 12229009 = 5178^2 + 3497^2 .

It is an emirp because it is prime and its reverse (39604093) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39040693 - 2¹³ = 39032501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39040663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19520346 + 19520347.

It is an arithmetic number, because the mean of its divisors is an integer number (19520347).

Almost surely, 2^39040693 is an apocalyptic number.

It is an amenable number.

39040693 is a deficient number, since it is larger than the sum of its proper divisors (1).

39040693 is an equidigital number, since it uses as much as digits as its factorization.

39040693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 39040693 is about 6248.2551964528. The cubic root of 39040693 is about 339.2390507960.

The spelling of 39040693 in words is "thirty-nine million, forty thousand, six hundred ninety-three".