47639139379 has 4 divisors (see below), whose sum is σ = 51303688576. Its totient is φ = 43974590184.

The previous prime is 47639139371. The next prime is 47639139391. The reversal of 47639139379 is 97393193674.

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 47639139379 - 2³ = 47639139371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47639139371) 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, 1832274579 + ... + 1832274604.

It is an arithmetic number, because the mean of its divisors is an integer number (12825922144).

Almost surely, 2^47639139379 is an apocalyptic number.

47639139379 is a deficient number, since it is larger than the sum of its proper divisors (3664549197).

47639139379 is a wasteful number, since it uses less digits than its factorization.

47639139379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3664549196.

The product of its digits is 23147208, while the sum is 61.

The spelling of 47639139379 in words is "forty-seven billion, six hundred thirty-nine million, one hundred thirty-nine thousand, three hundred seventy-nine".