47856047 has 2 divisors, whose sum is σ = 47856048. Its totient is φ = 47856046.

The previous prime is 47856019. The next prime is 47856049. The reversal of 47856047 is 74065874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47856047 - 2²² = 43661743 is a prime.

Together with 47856049, 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 = 47855995 and 47856013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47856049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23928023 + 23928024.

It is an arithmetic number, because the mean of its divisors is an integer number (23928024).

Almost surely, 2^47856047 is an apocalyptic number.

47856047 is a deficient number, since it is larger than the sum of its proper divisors (1).

47856047 is an equidigital number, since it uses as much as digits as its factorization.

47856047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 188160, while the sum is 41.

The square root of 47856047 is about 6917.8065165195. The cubic root of 47856047 is about 363.0604492722.

The spelling of 47856047 in words is "forty-seven million, eight hundred fifty-six thousand, forty-seven".