47204447 has 2 divisors, whose sum is σ = 47204448. Its totient is φ = 47204446.

The previous prime is 47204419. The next prime is 47204449. The reversal of 47204447 is 74440274.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47204447 - 2⁸ = 47204191 is a prime.

Together with 47204449, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47204449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23602223 + 23602224.

It is an arithmetic number, because the mean of its divisors is an integer number (23602224).

Almost surely, 2^47204447 is an apocalyptic number.

47204447 is a deficient number, since it is larger than the sum of its proper divisors (1).

47204447 is an equidigital number, since it uses as much as digits as its factorization.

47204447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25088, while the sum is 32.

The square root of 47204447 is about 6870.5492502419. The cubic root of 47204447 is about 361.4051232120.

The spelling of 47204447 in words is "forty-seven million, two hundred four thousand, four hundred forty-seven".