39489638399 has 8 divisors (see below), whose sum is σ = 41572224000. Its totient is φ = 37407471192.

The previous prime is 39489638389. The next prime is 39489638407. The reversal of 39489638399 is 99383698493.

It is a Cunningham number, because it is equal to 198720²-1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39489638399 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 (39489638339) 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, 99362 + ... + 298080.

It is an arithmetic number, because the mean of its divisors is an integer number (5196528000).

Almost surely, 2^39489638399 is an apocalyptic number.

39489638399 is a deficient number, since it is larger than the sum of its proper divisors (2082585601).

39489638399 is a wasteful number, since it uses less digits than its factorization.

39489638399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209197.

The product of its digits is 272097792, while the sum is 71.

The spelling of 39489638399 in words is "thirty-nine billion, four hundred eighty-nine million, six hundred thirty-eight thousand, three hundred ninety-nine".