39302042639 has 4 divisors (see below), whose sum is σ = 39302490024. Its totient is φ = 39301595256.

The previous prime is 39302042623. The next prime is 39302042701. The reversal of 39302042639 is 93624020393.

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.

It is a cyclic number.

It is not a de Polignac number, because 39302042639 - 2⁴ = 39302042623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39302042596 and 39302042605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39307042639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43577 + ... + 283730.

It is an arithmetic number, because the mean of its divisors is an integer number (9825622506).

Almost surely, 2^39302042639 is an apocalyptic number.

39302042639 is a deficient number, since it is larger than the sum of its proper divisors (447385).

39302042639 is a wasteful number, since it uses less digits than its factorization.

39302042639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447384.

The product of its (nonzero) digits is 209952, while the sum is 41.

The spelling of 39302042639 in words is "thirty-nine billion, three hundred two million, forty-two thousand, six hundred thirty-nine".