47878867 has 2 divisors, whose sum is σ = 47878868. Its totient is φ = 47878866.

The previous prime is 47878813. The next prime is 47878889. The reversal of 47878867 is 76887874.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47878867 - 2¹⁹ = 47354579 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47878807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23939433 + 23939434.

It is an arithmetic number, because the mean of its divisors is an integer number (23939434).

Almost surely, 2^47878867 is an apocalyptic number.

47878867 is a deficient number, since it is larger than the sum of its proper divisors (1).

47878867 is an equidigital number, since it uses as much as digits as its factorization.

47878867 is an evil number, because the sum of its binary digits is even.

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

The square root of 47878867 is about 6919.4556866852. The cubic root of 47878867 is about 363.1181481659.

The spelling of 47878867 in words is "forty-seven million, eight hundred seventy-eight thousand, eight hundred sixty-seven".