4945416989 has 2 divisors, whose sum is σ = 4945416990. Its totient is φ = 4945416988.

The previous prime is 4945416953. The next prime is 4945416991. The reversal of 4945416989 is 9896145494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4533732889 + 411684100 = 67333^2 + 20290^2 .

It is a cyclic number.

It is not a de Polignac number, because 4945416989 - 2²⁰ = 4944368413 is a prime.

It is a super-2 number, since 2×4945416989² = 48914298390179652242, which contains 22 as substring.

Together with 4945416991, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4945416089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2472708494 + 2472708495.

It is an arithmetic number, because the mean of its divisors is an integer number (2472708495).

Almost surely, 2^4945416989 is an apocalyptic number.

It is an amenable number.

4945416989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4945416989 is an equidigital number, since it uses as much as digits as its factorization.

4945416989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11197440, while the sum is 59.

The square root of 4945416989 is about 70323.6588140862. The cubic root of 4945416989 is about 1703.7307902208.

The spelling of 4945416989 in words is "four billion, nine hundred forty-five million, four hundred sixteen thousand, nine hundred eighty-nine".