39072427891 has 16 divisors (see below), whose sum is σ = 45805280256. Its totient is φ = 32633626176.

The previous prime is 39072427873. The next prime is 39072427907. The reversal of 39072427891 is 19872427093.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39072427891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39072427841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186906 + ... + 336271.

It is an arithmetic number, because the mean of its divisors is an integer number (2862830016).

Almost surely, 2^39072427891 is an apocalyptic number.

39072427891 is a deficient number, since it is larger than the sum of its proper divisors (6732852365).

39072427891 is a wasteful number, since it uses less digits than its factorization.

39072427891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523458.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 39072427891 in words is "thirty-nine billion, seventy-two million, four hundred twenty-seven thousand, eight hundred ninety-one".