209253193 has 4 divisors (see below), whose sum is σ = 216003328. Its totient is φ = 202503060.

The previous prime is 209253133. The next prime is 209253223. The reversal of 209253193 is 391352902.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-209253193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (209253133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3375021 + ... + 3375082.

It is an arithmetic number, because the mean of its divisors is an integer number (54000832).

Almost surely, 2^209253193 is an apocalyptic number.

It is an amenable number.

209253193 is a deficient number, since it is larger than the sum of its proper divisors (6750135).

209253193 is an equidigital number, since it uses as much as digits as its factorization.

209253193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6750134.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 209253193 is about 14465.5865072938. The cubic root of 209253193 is about 593.6867611614.

The spelling of 209253193 in words is "two hundred nine million, two hundred fifty-three thousand, one hundred ninety-three".