47207813 has 2 divisors, whose sum is σ = 47207814. Its totient is φ = 47207812.

The previous prime is 47207807. The next prime is 47207821. The reversal of 47207813 is 31870274.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43586404 + 3621409 = 6602^2 + 1903^2 .

It is a cyclic number.

It is not a de Polignac number, because 47207813 - 2⁸ = 47207557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_2843447 and since 47207813 and 2843447 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47207813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47207833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23603906 + 23603907.

It is an arithmetic number, because the mean of its divisors is an integer number (23603907).

Almost surely, 2^47207813 is an apocalyptic number.

It is an amenable number.

47207813 is a deficient number, since it is larger than the sum of its proper divisors (1).

47207813 is an equidigital number, since it uses as much as digits as its factorization.

47207813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 47207813 is about 6870.7942044570. The cubic root of 47207813 is about 361.4137132271.

The spelling of 47207813 in words is "forty-seven million, two hundred seven thousand, eight hundred thirteen".