47720807 has 2 divisors, whose sum is σ = 47720808. Its totient is φ = 47720806.

The previous prime is 47720753. The next prime is 47720809. The reversal of 47720807 is 70802774.

47720807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47720807 - 2⁸ = 47720551 is a prime.

Together with 47720809, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_2872376 and since 47720807 and 2872376 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47720809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23860403 + 23860404.

It is an arithmetic number, because the mean of its divisors is an integer number (23860404).

Almost surely, 2^47720807 is an apocalyptic number.

47720807 is a deficient number, since it is larger than the sum of its proper divisors (1).

47720807 is an equidigital number, since it uses as much as digits as its factorization.

47720807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 47720807 is about 6908.0248262438. The cubic root of 47720807 is about 362.7181266675.

The spelling of 47720807 in words is "forty-seven million, seven hundred twenty thousand, eight hundred seven".