84853999 has 2 divisors, whose sum is σ = 84854000. Its totient is φ = 84853998.

The previous prime is 84853991. The next prime is 84854009. The reversal of 84853999 is 99935848.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84853999 - 2³ = 84853991 is a prime.

It is a super-2 number, since 2×84853999² = 14400402292584002, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84853991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42426999 + 42427000.

It is an arithmetic number, because the mean of its divisors is an integer number (42427000).

Almost surely, 2^84853999 is an apocalyptic number.

84853999 is a deficient number, since it is larger than the sum of its proper divisors (1).

84853999 is an equidigital number, since it uses as much as digits as its factorization.

84853999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2799360, while the sum is 55.

The square root of 84853999 is about 9211.6230383141. The cubic root of 84853999 is about 439.4310811666.

The spelling of 84853999 in words is "eighty-four million, eight hundred fifty-three thousand, nine hundred ninety-nine".