39742624793 has 4 divisors (see below), whose sum is σ = 39752338788. Its totient is φ = 39732910800.

The previous prime is 39742624771. The next prime is 39742624799.

39742624793 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9437733904 + 30304890889 = 97148^2 + 174083^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39742624793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39742624799) 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, 4850858 + ... + 4859043.

It is an arithmetic number, because the mean of its divisors is an integer number (9938084697).

Almost surely, 2^39742624793 is an apocalyptic number.

It is an amenable number.

39742624793 is a deficient number, since it is larger than the sum of its proper divisors (9713995).

39742624793 is an equidigital number, since it uses as much as digits as its factorization.

39742624793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9713994.

The product of its digits is 13716864, while the sum is 56.

The spelling of 39742624793 in words is "thirty-nine billion, seven hundred forty-two million, six hundred twenty-four thousand, seven hundred ninety-three".