86938199 has 2 divisors, whose sum is σ = 86938200. Its totient is φ = 86938198.

The previous prime is 86938147. The next prime is 86938207. The reversal of 86938199 is 99183968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86938199 - 2⁸ = 86937943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86938199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86938139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43469099 + 43469100.

It is an arithmetic number, because the mean of its divisors is an integer number (43469100).

Almost surely, 2^86938199 is an apocalyptic number.

86938199 is a deficient number, since it is larger than the sum of its proper divisors (1).

86938199 is an equidigital number, since it uses as much as digits as its factorization.

86938199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 53.

The square root of 86938199 is about 9324.0655832099. The cubic root of 86938199 is about 442.9998165595. Note that the first 3 decimals are identical.

The spelling of 86938199 in words is "eighty-six million, nine hundred thirty-eight thousand, one hundred ninety-nine".