39142788893 has 4 divisors (see below), whose sum is σ = 42153772668. Its totient is φ = 36131805120.

The previous prime is 39142788871. The next prime is 39142788973. The reversal of 39142788893 is 39888724193.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15905749924 + 23237038969 = 126118^2 + 152437^2 .

It is a cyclic number.

It is not a de Polignac number, because 39142788893 - 2¹⁰ = 39142787869 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 (39142782893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1505491868 + ... + 1505491893.

It is an arithmetic number, because the mean of its divisors is an integer number (10538443167).

Almost surely, 2^39142788893 is an apocalyptic number.

It is an amenable number.

39142788893 is a deficient number, since it is larger than the sum of its proper divisors (3010983775).

39142788893 is a wasteful number, since it uses less digits than its factorization.

39142788893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3010983774.

The product of its digits is 20901888, while the sum is 62.

The spelling of 39142788893 in words is "thirty-nine billion, one hundred forty-two million, seven hundred eighty-eight thousand, eight hundred ninety-three".