47221469 has 2 divisors, whose sum is σ = 47221470. Its totient is φ = 47221468.

The previous prime is 47221459. The next prime is 47221477. The reversal of 47221469 is 96412274.

47221469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44382244 + 2839225 = 6662^2 + 1685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47221469 is a prime.

It is a super-2 number, since 2×47221469² = 4459734269035922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47221409) 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, 23610734 + 23610735.

It is an arithmetic number, because the mean of its divisors is an integer number (23610735).

Almost surely, 2^47221469 is an apocalyptic number.

It is an amenable number.

47221469 is a deficient number, since it is larger than the sum of its proper divisors (1).

47221469 is an equidigital number, since it uses as much as digits as its factorization.

47221469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 47221469 is about 6871.7879041775. The cubic root of 47221469 is about 361.4485590822.

The spelling of 47221469 in words is "forty-seven million, two hundred twenty-one thousand, four hundred sixty-nine".