39042172847 has 4 divisors (see below), whose sum is σ = 39058449600. Its totient is φ = 39025896096.

The previous prime is 39042172823. The next prime is 39042172849. The reversal of 39042172847 is 74827124093.

It is a happy number.

39042172847 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 39042172847 - 2²⁴ = 39025395631 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 (39042172849) 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, 8134778 + ... + 8139575.

It is an arithmetic number, because the mean of its divisors is an integer number (9764612400).

Almost surely, 2^39042172847 is an apocalyptic number.

39042172847 is a deficient number, since it is larger than the sum of its proper divisors (16276753).

39042172847 is a wasteful number, since it uses less digits than its factorization.

39042172847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16276752.

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 39042172847 in words is "thirty-nine billion, forty-two million, one hundred seventy-two thousand, eight hundred forty-seven".