99685853 has 2 divisors, whose sum is σ = 99685854. Its totient is φ = 99685852.

The previous prime is 99685849. The next prime is 99685871. The reversal of 99685853 is 35858699.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98942809 + 743044 = 9947^2 + 862^2 .

It is an emirp because it is prime and its reverse (35858699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99685853 - 2² = 99685849 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 99685795 and 99685804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99685843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49842926 + 49842927.

It is an arithmetic number, because the mean of its divisors is an integer number (49842927).

Almost surely, 2^99685853 is an apocalyptic number.

It is an amenable number.

99685853 is a deficient number, since it is larger than the sum of its proper divisors (1).

99685853 is an equidigital number, since it uses as much as digits as its factorization.

99685853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2332800, while the sum is 53.

The square root of 99685853 is about 9984.2802945430. The cubic root of 99685853 is about 463.6723264346.

The spelling of 99685853 in words is "ninety-nine million, six hundred eighty-five thousand, eight hundred fifty-three".