47638867 has 2 divisors, whose sum is σ = 47638868. Its totient is φ = 47638866.

The previous prime is 47638853. The next prime is 47638889. The reversal of 47638867 is 76883674.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47638867 - 2¹⁵ = 47606099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47638867.

It is not a weakly prime, because it can be changed into another prime (47638807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23819433 + 23819434.

It is an arithmetic number, because the mean of its divisors is an integer number (23819434).

Almost surely, 2^47638867 is an apocalyptic number.

47638867 is a deficient number, since it is larger than the sum of its proper divisors (1).

47638867 is an equidigital number, since it uses as much as digits as its factorization.

47638867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 49.

The square root of 47638867 is about 6902.0914946123. The cubic root of 47638867 is about 362.5104035064.

The spelling of 47638867 in words is "forty-seven million, six hundred thirty-eight thousand, eight hundred sixty-seven".