209495413 has 4 divisors (see below), whose sum is σ = 209675488. Its totient is φ = 209315340.

The previous prime is 209495401. The next prime is 209495417. The reversal of 209495413 is 314594902.

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 not a de Polignac number, because 209495413 - 2⁵ = 209495381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209495417) 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, 88281 + ... + 90622.

It is an arithmetic number, because the mean of its divisors is an integer number (52418872).

Almost surely, 2^209495413 is an apocalyptic number.

It is an amenable number.

209495413 is a deficient number, since it is larger than the sum of its proper divisors (180075).

209495413 is a wasteful number, since it uses less digits than its factorization.

209495413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180074.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 209495413 is about 14473.9563699771. The cubic root of 209495413 is about 593.9157458901.

It can be divided in two parts, 20949 and 5413, that added together give a palindrome (26362).

The spelling of 209495413 in words is "two hundred nine million, four hundred ninety-five thousand, four hundred thirteen".