999998853 has 24 divisors (see below), whose sum is σ = 1592958528. Its totient is φ = 546577152.

The previous prime is 999998843. The next prime is 999998863. The reversal of 999998853 is 358899999.

It is an interprime number because it is at equal distance from previous prime (999998843) and next prime (999998863).

It is not a de Polignac number, because 999998853 - 2⁶ = 999998789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999998843) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33900 + ... + 56117.

It is an arithmetic number, because the mean of its divisors is an integer number (66373272).

Almost surely, 2^999998853 is an apocalyptic number.

It is an amenable number.

999998853 is a deficient number, since it is larger than the sum of its proper divisors (592959675).

999998853 is a wasteful number, since it uses less digits than its factorization.

999998853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90073 (or 90050 counting only the distinct ones).

The product of its digits is 56687040, while the sum is 69.

The square root of 999998853 is about 31622.7584660162. The cubic root of 999998853 is about 999.9996176665. Note that the first 3 decimals are identical.

The spelling of 999998853 in words is "nine hundred ninety-nine million, nine hundred ninety-eight thousand, eight hundred fifty-three".