209296965 has 16 divisors (see below), whose sum is σ = 345678336. Its totient is φ = 108024000.

The previous prime is 209296963. The next prime is 209296993. The reversal of 209296965 is 569692902.

It is not a de Polignac number, because 209296965 - 2¹ = 209296963 is a prime.

It is a super-2 number, since 2×209296965² = 87610439116422450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209296961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224586 + ... + 225515.

It is an arithmetic number, because the mean of its divisors is an integer number (21604896).

Almost surely, 2^209296965 is an apocalyptic number.

It is an amenable number.

209296965 is a deficient number, since it is larger than the sum of its proper divisors (136381371).

209296965 is a wasteful number, since it uses less digits than its factorization.

209296965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450140.

The product of its (nonzero) digits is 524880, while the sum is 48.

The square root of 209296965 is about 14467.0993982899. The cubic root of 209296965 is about 593.7281544687.

The spelling of 209296965 in words is "two hundred nine million, two hundred ninety-six thousand, nine hundred sixty-five".