200085391 has 4 divisors (see below), whose sum is σ = 218274984. Its totient is φ = 181895800.

The previous prime is 200085373. The next prime is 200085437. The reversal of 200085391 is 193580002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 200085391 - 2¹⁵ = 200052623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200085311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9094780 + ... + 9094801.

It is an arithmetic number, because the mean of its divisors is an integer number (54568746).

Almost surely, 2^200085391 is an apocalyptic number.

200085391 is a deficient number, since it is larger than the sum of its proper divisors (18189593).

200085391 is a wasteful number, since it uses less digits than its factorization.

200085391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18189592.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 200085391 is about 14145.1543293101. The cubic root of 200085391 is about 584.8867640667.

The spelling of 200085391 in words is "two hundred million, eighty-five thousand, three hundred ninety-one".