47198687 has 2 divisors, whose sum is σ = 47198688. Its totient is φ = 47198686.

The previous prime is 47198677. The next prime is 47198693. The reversal of 47198687 is 78689174.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47198687 - 2²² = 43004383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47198677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23599343 + 23599344.

It is an arithmetic number, because the mean of its divisors is an integer number (23599344).

Almost surely, 2^47198687 is an apocalyptic number.

47198687 is a deficient number, since it is larger than the sum of its proper divisors (1).

47198687 is an equidigital number, since it uses as much as digits as its factorization.

47198687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 50.

The square root of 47198687 is about 6870.1300569931. The cubic root of 47198687 is about 361.3904227737.

The spelling of 47198687 in words is "forty-seven million, one hundred ninety-eight thousand, six hundred eighty-seven".