47228429 has 2 divisors, whose sum is σ = 47228430. Its totient is φ = 47228428.

The previous prime is 47228399. The next prime is 47228449. The reversal of 47228429 is 92482274.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43626025 + 3602404 = 6605^2 + 1898^2 .

It is a cyclic number.

It is not a de Polignac number, because 47228429 - 2⁸ = 47228173 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 47228392 and 47228401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47228449) 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, 23614214 + 23614215.

It is an arithmetic number, because the mean of its divisors is an integer number (23614215).

Almost surely, 2^47228429 is an apocalyptic number.

It is an amenable number.

47228429 is a deficient number, since it is larger than the sum of its proper divisors (1).

47228429 is an equidigital number, since it uses as much as digits as its factorization.

47228429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 38.

The square root of 47228429 is about 6872.2943039425. The cubic root of 47228429 is about 361.4663162482.

The spelling of 47228429 in words is "forty-seven million, two hundred twenty-eight thousand, four hundred twenty-nine".