99854869 has 2 divisors, whose sum is σ = 99854870. Its totient is φ = 99854868.

The previous prime is 99854831. The next prime is 99854873. The reversal of 99854869 is 96845899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95296644 + 4558225 = 9762^2 + 2135^2 .

It is an emirp because it is prime and its reverse (96845899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99854869 - 2¹⁵ = 99822101 is a prime.

It is a super-2 number, since 2×99854869² = 19941989726014322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99854819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49927434 + 49927435.

It is an arithmetic number, because the mean of its divisors is an integer number (49927435).

Almost surely, 2^99854869 is an apocalyptic number.

It is an amenable number.

99854869 is a deficient number, since it is larger than the sum of its proper divisors (1).

99854869 is an equidigital number, since it uses as much as digits as its factorization.

99854869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5598720, while the sum is 58.

The square root of 99854869 is about 9992.7408152118. The cubic root of 99854869 is about 463.9342285019.

The spelling of 99854869 in words is "ninety-nine million, eight hundred fifty-four thousand, eight hundred sixty-nine".