47499817 has 2 divisors, whose sum is σ = 47499818. Its totient is φ = 47499816.

The previous prime is 47499773. The next prime is 47499827. The reversal of 47499817 is 71899474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44036496 + 3463321 = 6636^2 + 1861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47499817 is a prime.

It is not a weakly prime, because it can be changed into another prime (47499827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23749908 + 23749909.

It is an arithmetic number, because the mean of its divisors is an integer number (23749909).

Almost surely, 2^47499817 is an apocalyptic number.

It is an amenable number.

47499817 is a deficient number, since it is larger than the sum of its proper divisors (1).

47499817 is an equidigital number, since it uses as much as digits as its factorization.

47499817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 49.

The square root of 47499817 is about 6892.0110998169. The cubic root of 47499817 is about 362.1573570846.

The spelling of 47499817 in words is "forty-seven million, four hundred ninety-nine thousand, eight hundred seventeen".