39734663439 has 4 divisors (see below), whose sum is σ = 52979551256. Its totient is φ = 26489775624.

The previous prime is 39734663413. The next prime is 39734663459. The reversal of 39734663439 is 93436643793.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 39734663439 - 2¹⁵ = 39734630671 is a prime.

It is a super-2 number, since 2×39734663439² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39734663459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6622443904 + ... + 6622443909.

It is an arithmetic number, because the mean of its divisors is an integer number (13244887814).

Almost surely, 2^39734663439 is an apocalyptic number.

39734663439 is a deficient number, since it is larger than the sum of its proper divisors (13244887817).

39734663439 is a wasteful number, since it uses less digits than its factorization.

39734663439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13244887816.

The product of its digits is 26453952, while the sum is 57.

The spelling of 39734663439 in words is "thirty-nine billion, seven hundred thirty-four million, six hundred sixty-three thousand, four hundred thirty-nine".