495729891 has 6 divisors (see below), whose sum is σ = 716054300. Its totient is φ = 330486588.

The previous prime is 495729887. The next prime is 495729961. The reversal of 495729891 is 198927594.

495729891 is a `hidden beast` number, since 495 + 72 + 9 + 89 + 1 = 666.

It is not a de Polignac number, because 495729891 - 2² = 495729887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (495729841) 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, 27540541 + ... + 27540558.

Almost surely, 2^495729891 is an apocalyptic number.

495729891 is a deficient number, since it is larger than the sum of its proper divisors (220324409).

495729891 is a wasteful number, since it uses less digits than its factorization.

495729891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55081105 (or 55081102 counting only the distinct ones).

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

The square root of 495729891 is about 22264.9924994373. The cubic root of 495729891 is about 791.4346046962.

The spelling of 495729891 in words is "four hundred ninety-five million, seven hundred twenty-nine thousand, eight hundred ninety-one".