47477429 has 2 divisors, whose sum is σ = 47477430. Its totient is φ = 47477428.

The previous prime is 47477389. The next prime is 47477431. The reversal of 47477429 is 92477474.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47472100 + 5329 = 6890^2 + 73^2 .

It is a cyclic number.

It is not a de Polignac number, because 47477429 - 2²⁴ = 30700213 is a prime.

It is a Sophie Germain prime.

Together with 47477431, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 47477429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47477449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23738714 + 23738715.

It is an arithmetic number, because the mean of its divisors is an integer number (23738715).

Almost surely, 2^47477429 is an apocalyptic number.

It is an amenable number.

47477429 is a deficient number, since it is larger than the sum of its proper divisors (1).

47477429 is an equidigital number, since it uses as much as digits as its factorization.

47477429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 395136, while the sum is 44.

The square root of 47477429 is about 6890.3867090316. The cubic root of 47477429 is about 362.1004498262.

The spelling of 47477429 in words is "forty-seven million, four hundred seventy-seven thousand, four hundred twenty-nine".