47263309 has 2 divisors, whose sum is σ = 47263310. Its totient is φ = 47263308.

The previous prime is 47263297. The next prime is 47263343. The reversal of 47263309 is 90336274.

47263309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (47263343) can be obtained adding 47263309 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45630025 + 1633284 = 6755^2 + 1278^2 .

It is a cyclic number.

It is not a de Polignac number, because 47263309 - 2⁵ = 47263277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47263369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23631654 + 23631655.

It is an arithmetic number, because the mean of its divisors is an integer number (23631655).

Almost surely, 2^47263309 is an apocalyptic number.

It is an amenable number.

47263309 is a deficient number, since it is larger than the sum of its proper divisors (1).

47263309 is an equidigital number, since it uses as much as digits as its factorization.

47263309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 47263309 is about 6874.8315615730. The cubic root of 47263309 is about 361.5552799143. Note that the first 3 decimals are identical.

The spelling of 47263309 in words is "forty-seven million, two hundred sixty-three thousand, three hundred nine".