39793639794 has 16 divisors (see below), whose sum is σ = 79629036768. Its totient is φ = 13257587072.

The previous prime is 39793639793. The next prime is 39793639799. The reversal of 39793639794 is 49793639793.

It is not an unprimeable number, because it can be changed into a prime (39793639793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1727487 + ... + 1750370.

It is an arithmetic number, because the mean of its divisors is an integer number (4976814798).

Almost surely, 2^39793639794 is an apocalyptic number.

39793639794 is an abundant number, since it is smaller than the sum of its proper divisors (39835396974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39793639794 is a wasteful number, since it uses less digits than its factorization.

39793639794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479769.

The product of its digits is 208324872, while the sum is 69.

Subtracting 39793639794 from its reverse (49793639793), we obtain a palindrome (9999999999).

The spelling of 39793639794 in words is "thirty-nine billion, seven hundred ninety-three million, six hundred thirty-nine thousand, seven hundred ninety-four".