47707717 has 2 divisors, whose sum is σ = 47707718. Its totient is φ = 47707716.

The previous prime is 47707657. The next prime is 47707721. The reversal of 47707717 is 71770774.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31069476 + 16638241 = 5574^2 + 4079^2 .

It is a cyclic number.

It is not a de Polignac number, because 47707717 - 2¹⁹ = 47183429 is a prime.

It is a super-2 number, since 2×47707717² = 4552052522704178, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47707717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47707787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23853858 + 23853859.

It is an arithmetic number, because the mean of its divisors is an integer number (23853859).

Almost surely, 2^47707717 is an apocalyptic number.

It is an amenable number.

47707717 is a deficient number, since it is larger than the sum of its proper divisors (1).

47707717 is an equidigital number, since it uses as much as digits as its factorization.

47707717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67228, while the sum is 40.

The square root of 47707717 is about 6907.0773124383. The cubic root of 47707717 is about 362.6849586445.

The spelling of 47707717 in words is "forty-seven million, seven hundred seven thousand, seven hundred seventeen".