47289287 has 2 divisors, whose sum is σ = 47289288. Its totient is φ = 47289286.

The previous prime is 47289269. The next prime is 47289289. The reversal of 47289287 is 78298274.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47289287 - 2¹² = 47285191 is a prime.

Together with 47289289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47289289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23644643 + 23644644.

It is an arithmetic number, because the mean of its divisors is an integer number (23644644).

Almost surely, 2^47289287 is an apocalyptic number.

47289287 is a deficient number, since it is larger than the sum of its proper divisors (1).

47289287 is an equidigital number, since it uses as much as digits as its factorization.

47289287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 451584, while the sum is 47.

The square root of 47289287 is about 6876.7206574064. The cubic root of 47289287 is about 361.6215100263.

The spelling of 47289287 in words is "forty-seven million, two hundred eighty-nine thousand, two hundred eighty-seven".