84939540199 has 2 divisors, whose sum is σ = 84939540200. Its totient is φ = 84939540198.

The previous prime is 84939540151. The next prime is 84939540221. The reversal of 84939540199 is 99104593948.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84939540199 - 2²⁷ = 84805322471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84939540899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42469770099 + 42469770100.

It is an arithmetic number, because the mean of its divisors is an integer number (42469770100).

Almost surely, 2^84939540199 is an apocalyptic number.

84939540199 is a deficient number, since it is larger than the sum of its proper divisors (1).

84939540199 is an equidigital number, since it uses as much as digits as its factorization.

84939540199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12597120, while the sum is 61.

The spelling of 84939540199 in words is "eighty-four billion, nine hundred thirty-nine million, five hundred forty thousand, one hundred ninety-nine".