47818867 has 2 divisors, whose sum is σ = 47818868. Its totient is φ = 47818866.

The previous prime is 47818861. The next prime is 47818871. The reversal of 47818867 is 76881874.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47818867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47818867.

It is not a weakly prime, because it can be changed into another prime (47818861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23909433 + 23909434.

It is an arithmetic number, because the mean of its divisors is an integer number (23909434).

Almost surely, 2^47818867 is an apocalyptic number.

47818867 is a deficient number, since it is larger than the sum of its proper divisors (1).

47818867 is an equidigital number, since it uses as much as digits as its factorization.

47818867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 602112, while the sum is 49.

The square root of 47818867 is about 6915.1187263850. The cubic root of 47818867 is about 362.9664027472.

The spelling of 47818867 in words is "forty-seven million, eight hundred eighteen thousand, eight hundred sixty-seven".