7639474289 has 2 divisors, whose sum is σ = 7639474290. Its totient is φ = 7639474288.

The previous prime is 7639474273. The next prime is 7639474351. The reversal of 7639474289 is 9824749367.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7624782400 + 14691889 = 87320^2 + 3833^2 .

It is an emirp because it is prime and its reverse (9824749367) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7639474289 - 2⁴ = 7639474273 is a prime.

It is not a weakly prime, because it can be changed into another prime (7639474789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3819737144 + 3819737145.

It is an arithmetic number, because the mean of its divisors is an integer number (3819737145).

Almost surely, 2^7639474289 is an apocalyptic number.

It is an amenable number.

7639474289 is a deficient number, since it is larger than the sum of its proper divisors (1).

7639474289 is an equidigital number, since it uses as much as digits as its factorization.

7639474289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18289152, while the sum is 59.

The square root of 7639474289 is about 87404.0862259883. The cubic root of 7639474289 is about 1969.4932250525.

The spelling of 7639474289 in words is "seven billion, six hundred thirty-nine million, four hundred seventy-four thousand, two hundred eighty-nine".