47117849 has 2 divisors, whose sum is σ = 47117850. Its totient is φ = 47117848.

The previous prime is 47117797. The next prime is 47117857. The reversal of 47117849 is 94871174.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34727449 + 12390400 = 5893^2 + 3520^2 .

It is a cyclic number.

It is not a de Polignac number, because 47117849 - 2¹² = 47113753 is a prime.

It is a super-3 number, since 3×47117849³ (a number of 24 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (47117879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23558924 + 23558925.

It is an arithmetic number, because the mean of its divisors is an integer number (23558925).

Almost surely, 2^47117849 is an apocalyptic number.

It is an amenable number.

47117849 is a deficient number, since it is larger than the sum of its proper divisors (1).

47117849 is an equidigital number, since it uses as much as digits as its factorization.

47117849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 41.

The square root of 47117849 is about 6864.2442409926. The cubic root of 47117849 is about 361.1839850157.

The spelling of 47117849 in words is "forty-seven million, one hundred seventeen thousand, eight hundred forty-nine".