47209933 has 2 divisors, whose sum is σ = 47209934. Its totient is φ = 47209932.

The previous prime is 47209919. The next prime is 47209951. The reversal of 47209933 is 33990274.

47209933 is nontrivially palindromic in base 3.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30669444 + 16540489 = 5538^2 + 4067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47209933 is a prime.

It is equal to p_2843569 and since 47209933 and 2843569 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 47209892 and 47209901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47209973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23604966 + 23604967.

It is an arithmetic number, because the mean of its divisors is an integer number (23604967).

Almost surely, 2^47209933 is an apocalyptic number.

It is an amenable number.

47209933 is a deficient number, since it is larger than the sum of its proper divisors (1).

47209933 is an equidigital number, since it uses as much as digits as its factorization.

47209933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 47209933 is about 6870.9484789220. The cubic root of 47209933 is about 361.4191232468.

The spelling of 47209933 in words is "forty-seven million, two hundred nine thousand, nine hundred thirty-three".