47105977 has 2 divisors, whose sum is σ = 47105978. Its totient is φ = 47105976.

The previous prime is 47105939. The next prime is 47105983. The reversal of 47105977 is 77950174.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43612816 + 3493161 = 6604^2 + 1869^2 .

It is a cyclic number.

It is not a de Polignac number, because 47105977 - 2¹¹ = 47103929 is a prime.

It is not a weakly prime, because it can be changed into another prime (47108977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23552988 + 23552989.

It is an arithmetic number, because the mean of its divisors is an integer number (23552989).

Almost surely, 2^47105977 is an apocalyptic number.

It is an amenable number.

47105977 is a deficient number, since it is larger than the sum of its proper divisors (1).

47105977 is an equidigital number, since it uses as much as digits as its factorization.

47105977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61740, while the sum is 40.

The square root of 47105977 is about 6863.3794154192. The cubic root of 47105977 is about 361.1536473514.

The spelling of 47105977 in words is "forty-seven million, one hundred five thousand, nine hundred seventy-seven".