47919146839 has 4 divisors (see below), whose sum is σ = 49087906560. Its totient is φ = 46750387120.

The previous prime is 47919146819. The next prime is 47919146843. The reversal of 47919146839 is 93864191974.

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 47919146839 - 2¹³ = 47919138647 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 (47919146819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 584379799 + ... + 584379880.

It is an arithmetic number, because the mean of its divisors is an integer number (12271976640).

Almost surely, 2^47919146839 is an apocalyptic number.

47919146839 is a deficient number, since it is larger than the sum of its proper divisors (1168759721).

47919146839 is a wasteful number, since it uses less digits than its factorization.

47919146839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168759720.

The product of its digits is 11757312, while the sum is 61.

The spelling of 47919146839 in words is "forty-seven billion, nine hundred nineteen million, one hundred forty-six thousand, eight hundred thirty-nine".