47112139 has 2 divisors, whose sum is σ = 47112140. Its totient is φ = 47112138.

The previous prime is 47112127. The next prime is 47112173. The reversal of 47112139 is 93121174.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47112139 - 2⁷ = 47112011 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47112199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23556069 + 23556070.

It is an arithmetic number, because the mean of its divisors is an integer number (23556070).

Almost surely, 2^47112139 is an apocalyptic number.

47112139 is a deficient number, since it is larger than the sum of its proper divisors (1).

47112139 is an equidigital number, since it uses as much as digits as its factorization.

47112139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 28.

The square root of 47112139 is about 6863.8283049622. The cubic root of 47112139 is about 361.1693943393.

The spelling of 47112139 in words is "forty-seven million, one hundred twelve thousand, one hundred thirty-nine".