199808253 has 24 divisors (see below), whose sum is σ = 292295640. Its totient is φ = 131518080.

The previous prime is 199808249. The next prime is 199808339. The reversal of 199808253 is 352808991.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1505529 + 198302724 = 1227^2 + 14082^2 .

It is not a de Polignac number, because 199808253 - 2² = 199808249 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 199808199 and 199808208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199808353) 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, 281463 + ... + 282171.

It is an arithmetic number, because the mean of its divisors is an integer number (12178985).

Almost surely, 2^199808253 is an apocalyptic number.

It is an amenable number.

199808253 is a deficient number, since it is larger than the sum of its proper divisors (92487387).

199808253 is a wasteful number, since it uses less digits than its factorization.

199808253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069 (or 1066 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 199808253 is about 14135.3547178697. The cubic root of 199808253 is about 584.6165973415.

The spelling of 199808253 in words is "one hundred ninety-nine million, eight hundred eight thousand, two hundred fifty-three".