85671199 has 2 divisors, whose sum is σ = 85671200. Its totient is φ = 85671198.

The previous prime is 85671193. The next prime is 85671203. The reversal of 85671199 is 99117658.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85671199 - 2⁹ = 85670687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85671193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42835599 + 42835600.

It is an arithmetic number, because the mean of its divisors is an integer number (42835600).

Almost surely, 2^85671199 is an apocalyptic number.

85671199 is a deficient number, since it is larger than the sum of its proper divisors (1).

85671199 is an equidigital number, since it uses as much as digits as its factorization.

85671199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 46.

The square root of 85671199 is about 9255.8737567017. The cubic root of 85671199 is about 440.8372471004.

The spelling of 85671199 in words is "eighty-five million, six hundred seventy-one thousand, one hundred ninety-nine".