4942604900809 has 3 divisors (see below), whose sum is σ = 4942607124007. Its totient is φ = 4942602677612.

The previous prime is 4942604900791. The next prime is 4942604900833. The reversal of 4942604900809 is 9080094062494.

The square root of 4942604900809 is 2223197.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1232466327225 + 3710138573584 = 1110165^2 + 1926172^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4942604900809 is a prime.

It is a super-2 number, since 2×4942604900809² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4942604900809.

It is not an unprimeable number, because it can be changed into a prime (4942604900509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1111599 + ... + 3334795.

Almost surely, 2^{4942604900809} is an apocalyptic number.

4942604900809 is the 2223197-th square number.

4942604900809 is the 1111599-th centered octagonal number.

It is an amenable number.

4942604900809 is a deficient number, since it is larger than the sum of its proper divisors (2223198).

4942604900809 is an frugal number, since it uses more digits than its factorization.

4942604900809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4446394 (or 2223197 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 4942604900809 in words is "four trillion, nine hundred forty-two billion, six hundred four million, nine hundred thousand, eight hundred nine".