495006921 has 12 divisors (see below), whose sum is σ = 725682672. Its totient is φ = 325078776.

The previous prime is 495006913. The next prime is 495006923. The reversal of 495006921 is 129600594.

It is not a de Polignac number, because 495006921 - 2³ = 495006913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (495006923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 409851 + ... + 411056.

It is an arithmetic number, because the mean of its divisors is an integer number (60473556).

Almost surely, 2^495006921 is an apocalyptic number.

It is an amenable number.

495006921 is a deficient number, since it is larger than the sum of its proper divisors (230675751).

495006921 is a wasteful number, since it uses less digits than its factorization.

495006921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820980 (or 820977 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 495006921 is about 22248.7509986516. The cubic root of 495006921 is about 791.0496760831.

The spelling of 495006921 in words is "four hundred ninety-five million, six thousand, nine hundred twenty-one".