47425139 has 2 divisors, whose sum is σ = 47425140. Its totient is φ = 47425138.

The previous prime is 47425129. The next prime is 47425141. The reversal of 47425139 is 93152474.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47425139 - 2²⁰ = 46376563 is a prime.

Together with 47425141, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 47425099 and 47425108.

It is not a weakly prime, because it can be changed into another prime (47425129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23712569 + 23712570.

It is an arithmetic number, because the mean of its divisors is an integer number (23712570).

Almost surely, 2^47425139 is an apocalyptic number.

47425139 is a deficient number, since it is larger than the sum of its proper divisors (1).

47425139 is an equidigital number, since it uses as much as digits as its factorization.

47425139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

The square root of 47425139 is about 6886.5912467635. The cubic root of 47425139 is about 361.9674660179.

The spelling of 47425139 in words is "forty-seven million, four hundred twenty-five thousand, one hundred thirty-nine".