4644477491 has 2 divisors, whose sum is σ = 4644477492. Its totient is φ = 4644477490.

The previous prime is 4644477449. The next prime is 4644477493. The reversal of 4644477491 is 1947744464.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4644477491 is a prime.

Together with 4644477493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4644477493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2322238745 + 2322238746.

It is an arithmetic number, because the mean of its divisors is an integer number (2322238746).

Almost surely, 2^4644477491 is an apocalyptic number.

4644477491 is a deficient number, since it is larger than the sum of its proper divisors (1).

4644477491 is an equidigital number, since it uses as much as digits as its factorization.

4644477491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2709504, while the sum is 50.

The square root of 4644477491 is about 68150.4034544184. The cubic root of 4644477491 is about 1668.4465086520.

The spelling of 4644477491 in words is "four billion, six hundred forty-four million, four hundred seventy-seven thousand, four hundred ninety-one".