495791289 has 48 divisors (see below), whose sum is σ = 856956672. Its totient is φ = 270065664.

The previous prime is 495791251. The next prime is 495791291. The reversal of 495791289 is 982197594.

495791289 is a `hidden beast` number, since 49 + 579 + 1 + 28 + 9 = 666.

It is not a de Polignac number, because 495791289 - 2⁸ = 495791033 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (495791189) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 835777 + ... + 836369.

It is an arithmetic number, because the mean of its divisors is an integer number (17853264).

Almost surely, 2^495791289 is an apocalyptic number.

It is an amenable number.

495791289 is a deficient number, since it is larger than the sum of its proper divisors (361165383).

495791289 is a wasteful number, since it uses less digits than its factorization.

495791289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206 (or 1203 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The square root of 495791289 is about 22266.3712580205. The cubic root of 495791289 is about 791.4672773920.

The spelling of 495791289 in words is "four hundred ninety-five million, seven hundred ninety-one thousand, two hundred eighty-nine".