47209247 has 2 divisors, whose sum is σ = 47209248. Its totient is φ = 47209246.

The previous prime is 47209237. The next prime is 47209301. The reversal of 47209247 is 74290274.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47209247 - 2⁸ = 47208991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47209237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23604623 + 23604624.

It is an arithmetic number, because the mean of its divisors is an integer number (23604624).

Almost surely, 2^47209247 is an apocalyptic number.

47209247 is a deficient number, since it is larger than the sum of its proper divisors (1).

47209247 is an equidigital number, since it uses as much as digits as its factorization.

47209247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 47209247 is about 6870.8985584129. The cubic root of 47209247 is about 361.4173726638.

The spelling of 47209247 in words is "forty-seven million, two hundred nine thousand, two hundred forty-seven".