4897809 has 12 divisors (see below), whose sum is σ = 8085376. Its totient is φ = 2798712.

The previous prime is 4897787. The next prime is 4897811. The reversal of 4897809 is 9087984.

It is not a de Polignac number, because 4897809 - 2⁵ = 4897777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4897859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38809 + ... + 38934.

Almost surely, 2^4897809 is an apocalyptic number.

It is an amenable number.

4897809 is a deficient number, since it is larger than the sum of its proper divisors (3187567).

4897809 is a wasteful number, since it uses less digits than its factorization.

4897809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77756 (or 77753 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 4897809 is about 2213.0994103293. The cubic root of 4897809 is about 169.8246057230.

The spelling of 4897809 in words is "four million, eight hundred ninety-seven thousand, eight hundred nine".