47009687 has 2 divisors, whose sum is σ = 47009688. Its totient is φ = 47009686.

The previous prime is 47009663. The next prime is 47009693. The reversal of 47009687 is 78690074.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47009687 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47009387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23504843 + 23504844.

It is an arithmetic number, because the mean of its divisors is an integer number (23504844).

Almost surely, 2^47009687 is an apocalyptic number.

47009687 is a deficient number, since it is larger than the sum of its proper divisors (1).

47009687 is an equidigital number, since it uses as much as digits as its factorization.

47009687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 47009687 is about 6856.3610610877. The cubic root of 47009687 is about 360.9073997137.

The spelling of 47009687 in words is "forty-seven million, nine thousand, six hundred eighty-seven".