39187704939 has 8 divisors (see below), whose sum is σ = 52252183872. Its totient is φ = 26124181320.

The previous prime is 39187704929. The next prime is 39187704971. The reversal of 39187704939 is 93940778193.

It is a happy number.

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

It is not a de Polignac number, because 39187704939 - 2¹¹ = 39187702891 is a prime.

It is a super-2 number, since 2×39187704939² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39187704929) 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, 136897 + ... + 311634.

It is an arithmetic number, because the mean of its divisors is an integer number (6531522984).

Almost surely, 2^39187704939 is an apocalyptic number.

39187704939 is a deficient number, since it is larger than the sum of its proper divisors (13064478933).

39187704939 is a wasteful number, since it uses less digits than its factorization.

39187704939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477657.

The product of its (nonzero) digits is 10287648, while the sum is 60.

The spelling of 39187704939 in words is "thirty-nine billion, one hundred eighty-seven million, seven hundred four thousand, nine hundred thirty-nine".