47229829 has 2 divisors, whose sum is σ = 47229830. Its totient is φ = 47229828.

The previous prime is 47229817. The next prime is 47229857. The reversal of 47229829 is 92892274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33907329 + 13322500 = 5823^2 + 3650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47229829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47229869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23614914 + 23614915.

It is an arithmetic number, because the mean of its divisors is an integer number (23614915).

Almost surely, 2^47229829 is an apocalyptic number.

It is an amenable number.

47229829 is a deficient number, since it is larger than the sum of its proper divisors (1).

47229829 is an equidigital number, since it uses as much as digits as its factorization.

47229829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 47229829 is about 6872.3961614564. The cubic root of 47229829 is about 361.4698878811.

The spelling of 47229829 in words is "forty-seven million, two hundred twenty-nine thousand, eight hundred twenty-nine".