495740409 has 4 divisors (see below), whose sum is σ = 660987216. Its totient is φ = 330493604.

The previous prime is 495740363. The next prime is 495740423. The reversal of 495740409 is 904047594.

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 495740409 - 2¹¹ = 495738361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (495740909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82623399 + ... + 82623404.

It is an arithmetic number, because the mean of its divisors is an integer number (165246804).

Almost surely, 2^495740409 is an apocalyptic number.

It is an amenable number.

495740409 is a deficient number, since it is larger than the sum of its proper divisors (165246807).

495740409 is a wasteful number, since it uses less digits than its factorization.

495740409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165246806.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 495740409 is about 22265.2286985784. The cubic root of 495740409 is about 791.4402019986.

The spelling of 495740409 in words is "four hundred ninety-five million, seven hundred forty thousand, four hundred nine".