47678887 has 2 divisors, whose sum is σ = 47678888. Its totient is φ = 47678886.

The previous prime is 47678857. The next prime is 47678893. The reversal of 47678887 is 78887674.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47678887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47678857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23839443 + 23839444.

It is an arithmetic number, because the mean of its divisors is an integer number (23839444).

Almost surely, 2^47678887 is an apocalyptic number.

47678887 is a deficient number, since it is larger than the sum of its proper divisors (1).

47678887 is an equidigital number, since it uses as much as digits as its factorization.

47678887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4214784, while the sum is 55.

The square root of 47678887 is about 6904.9900072339. The cubic root of 47678887 is about 362.6118865088.

The spelling of 47678887 in words is "forty-seven million, six hundred seventy-eight thousand, eight hundred eighty-seven".