209095005 has 24 divisors (see below), whose sum is σ = 389174112. Its totient is φ = 95585952.

The previous prime is 209094989. The next prime is 209095009. The reversal of 209095005 is 500590902.

It is not a de Polignac number, because 209095005 - 2⁴ = 209094989 is a prime.

It is a super-2 number, since 2×209095005² = 87441442231900050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209095009) 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, 141507 + ... + 142976.

It is an arithmetic number, because the mean of its divisors is an integer number (16215588).

Almost surely, 2^209095005 is an apocalyptic number.

It is an amenable number.

209095005 is a deficient number, since it is larger than the sum of its proper divisors (180079107).

209095005 is a wasteful number, since it uses less digits than its factorization.

209095005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284505 (or 284498 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 209095005 is about 14460.1177381099. The cubic root of 209095005 is about 593.5371213953.

The spelling of 209095005 in words is "two hundred nine million, ninety-five thousand, five".