39940759 has 4 divisors (see below), whose sum is σ = 39953704. Its totient is φ = 39927816.

The previous prime is 39940757. The next prime is 39940763. The reversal of 39940759 is 95704993.

39940759 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 95704993 = 89 ⋅1075337.

It is a cyclic number.

It is not a de Polignac number, because 39940759 - 2¹ = 39940757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39940751) 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 in 3 ways as a sum of consecutive naturals, for example, 1144 + ... + 9010.

It is an arithmetic number, because the mean of its divisors is an integer number (9988426).

Almost surely, 2^39940759 is an apocalyptic number.

39940759 is a deficient number, since it is larger than the sum of its proper divisors (12945).

39940759 is an equidigital number, since it uses as much as digits as its factorization.

39940759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12944.

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 39940759 is about 6319.8701727172. The cubic root of 39940759 is about 341.8262714422.

The spelling of 39940759 in words is "thirty-nine million, nine hundred forty thousand, seven hundred fifty-nine".