47420077 has 2 divisors, whose sum is σ = 47420078. Its totient is φ = 47420076.

The previous prime is 47420063. The next prime is 47420081. The reversal of 47420077 is 77002474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26020201 + 21399876 = 5101^2 + 4626^2 .

It is a cyclic number.

It is not a de Polignac number, because 47420077 - 2¹⁹ = 46895789 is a prime.

It is equal to p_2855416 and since 47420077 and 2855416 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47420027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23710038 + 23710039.

It is an arithmetic number, because the mean of its divisors is an integer number (23710039).

Almost surely, 2^47420077 is an apocalyptic number.

It is an amenable number.

47420077 is a deficient number, since it is larger than the sum of its proper divisors (1).

47420077 is an equidigital number, since it uses as much as digits as its factorization.

47420077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10976, while the sum is 31.

The square root of 47420077 is about 6886.2237111497. The cubic root of 47420077 is about 361.9545871626.

The spelling of 47420077 in words is "forty-seven million, four hundred twenty thousand, seventy-seven".