7906564489 has 2 divisors, whose sum is σ = 7906564490. Its totient is φ = 7906564488.

The previous prime is 7906564441. The next prime is 7906564511. The reversal of 7906564489 is 9844656097.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5889027600 + 2017536889 = 76740^2 + 44917^2 .

It is an emirp because it is prime and its reverse (9844656097) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7906564489 - 2²⁷ = 7772346761 is a prime.

It is a super-2 number, since 2×7906564489² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7906564789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3953282244 + 3953282245.

It is an arithmetic number, because the mean of its divisors is an integer number (3953282245).

Almost surely, 2^7906564489 is an apocalyptic number.

It is an amenable number.

7906564489 is a deficient number, since it is larger than the sum of its proper divisors (1).

7906564489 is an equidigital number, since it uses as much as digits as its factorization.

7906564489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13063680, while the sum is 58.

The square root of 7906564489 is about 88918.8646407499. The cubic root of 7906564489 is about 1992.1831960065.

The spelling of 7906564489 in words is "seven billion, nine hundred six million, five hundred sixty-four thousand, four hundred eighty-nine".