4197887 has 2 divisors, whose sum is σ = 4197888.
Its totient is φ = 4197886.
The previous prime is 4197883. The next prime is 4197913. The reversal of 4197887 is 7887914.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 4197887 - 22 = 4197883 is a prime.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (4197883) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2098943 + 2098944.
It is an arithmetic number, because the mean of its divisors is an integer number (2098944).
Almost surely, 24197887 is an apocalyptic number.
4197887 is a deficient number, since it is larger than the sum of its proper divisors (1).
4197887 is an equidigital number, since it uses as much as digits as its factorization.
4197887 is an evil number, because the sum of its binary digits is even.
The product of its digits is 112896, while the sum is 44.
The square root of 4197887 is about 2048.8745691233.
The cubic root of 4197887 is about 161.3158031215.
The spelling of 4197887 in words is "four million, one hundred ninety-seven thousand, eight hundred eighty-seven".