7782239089 has 9 divisors (see below), whose sum is σ = 8215157433. Its totient is φ = 7371059652.

The previous prime is 7782239021. The next prime is 7782239123. The reversal of 7782239089 is 9809322877.

The square root of 7782239089 is 88217.

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

It is not a de Polignac number, because 7782239089 - 2¹¹ = 7782237041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7782239189) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1673802 + ... + 1678444.

Almost surely, 2^7782239089 is an apocalyptic number.

7782239089 is the 88217-th square number.

7782239089 is the 44109-th centered octagonal number.

It is an amenable number.

7782239089 is a deficient number, since it is larger than the sum of its proper divisors (432918344).

7782239089 is an frugal number, since it uses more digits than its factorization.

7782239089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9324 (or 4662 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 55.

The cubic root of 7782239089 is about 1981.6860692616.

The spelling of 7782239089 in words is "seven billion, seven hundred eighty-two million, two hundred thirty-nine thousand, eighty-nine".