495510409 has 6 divisors (see below), whose sum is σ = 505038926. Its totient is φ = 486158400.

The previous prime is 495510361. The next prime is 495510451. The reversal of 495510409 is 904015594.

It can be written as a sum of positive squares in 3 ways, for example, as 356152384 + 139358025 = 18872^2 + 11805^2 .

It is not a de Polignac number, because 495510409 - 2¹⁵ = 495477641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (495510469) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85392 + ... + 91009.

Almost surely, 2^495510409 is an apocalyptic number.

It is an amenable number.

495510409 is a deficient number, since it is larger than the sum of its proper divisors (9528517).

495510409 is an equidigital number, since it uses as much as digits as its factorization.

495510409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176507 (or 176454 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 495510409 is about 22260.0630951487. The cubic root of 495510409 is about 791.3177861792.

The spelling of 495510409 in words is "four hundred ninety-five million, five hundred ten thousand, four hundred nine".