47775943 has 2 divisors, whose sum is σ = 47775944. Its totient is φ = 47775942.

The previous prime is 47775913. The next prime is 47775977. The reversal of 47775943 is 34957774.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47775943 - 2¹³ = 47767751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47775893 and 47775902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47775913) 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, 23887971 + 23887972.

It is an arithmetic number, because the mean of its divisors is an integer number (23887972).

Almost surely, 2^47775943 is an apocalyptic number.

47775943 is a deficient number, since it is larger than the sum of its proper divisors (1).

47775943 is an equidigital number, since it uses as much as digits as its factorization.

47775943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 740880, while the sum is 46.

The square root of 47775943 is about 6912.0143952396. The cubic root of 47775943 is about 362.8577661714.

The spelling of 47775943 in words is "forty-seven million, seven hundred seventy-five thousand, nine hundred forty-three".