495871906 has 4 divisors (see below), whose sum is σ = 743807862. Its totient is φ = 247935952.

The previous prime is 495871889. The next prime is 495871907. The reversal of 495871906 is 609178594.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 609178594 = 2 ⋅304589297.

It can be written as a sum of positive squares in only one way, i.e., 446941881 + 48930025 = 21141^2 + 6995^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 495871906.

It is not an unprimeable number, because it can be changed into a prime (495871907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123967975 + ... + 123967978.

Almost surely, 2^495871906 is an apocalyptic number.

495871906 is a deficient number, since it is larger than the sum of its proper divisors (247935956).

495871906 is a wasteful number, since it uses less digits than its factorization.

495871906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247935955.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 495871906 is about 22268.1814704300. The cubic root of 495871906 is about 791.5101733047.

The spelling of 495871906 in words is "four hundred ninety-five million, eight hundred seventy-one thousand, nine hundred six".