2009695 has 4 divisors (see below), whose sum is σ = 2411640. Its totient is φ = 1607752.

The previous prime is 2009669. The next prime is 2009713. The reversal of 2009695 is 5969002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2009695 - 2¹⁵ = 1976927 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200965 + ... + 200974.

It is an arithmetic number, because the mean of its divisors is an integer number (602910).

2^2009695 is an apocalyptic number.

2009695 is a deficient number, since it is larger than the sum of its proper divisors (401945).

2009695 is an equidigital number, since it uses as much as digits as its factorization.

2009695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401944.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 2009695 is about 1417.6371185885. The cubic root of 2009695 is about 126.1953591605.

It can be divided in two parts, 2009 and 695, that added together give a square (2704 = 52²).

The spelling of 2009695 in words is "two million, nine thousand, six hundred ninety-five".