47992189939 has 4 divisors (see below), whose sum is σ = 48026252520. Its totient is φ = 47958127360.

The previous prime is 47992189937. The next prime is 47992189951. The reversal of 47992189939 is 93998129974.

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 47992189939 - 2¹ = 47992189937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47992189933) 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, 17029177 + ... + 17031994.

It is an arithmetic number, because the mean of its divisors is an integer number (12006563130).

Almost surely, 2^47992189939 is an apocalyptic number.

47992189939 is a deficient number, since it is larger than the sum of its proper divisors (34062581).

47992189939 is a wasteful number, since it uses less digits than its factorization.

47992189939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34062580.

The product of its digits is 79361856, while the sum is 70.

The spelling of 47992189939 in words is "forty-seven billion, nine hundred ninety-two million, one hundred eighty-nine thousand, nine hundred thirty-nine".