709290889 has 4 divisors (see below), whose sum is σ = 709837380. Its totient is φ = 708744400.

The previous prime is 709290871. The next prime is 709290899. The reversal of 709290889 is 988092907.

709290889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76265289 + 633025600 = 8733^2 + 25160^2 .

It is a cyclic number.

It is not a de Polignac number, because 709290889 - 2⁷ = 709290761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (709290899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271294 + ... + 273895.

It is an arithmetic number, because the mean of its divisors is an integer number (177459345).

Almost surely, 2^709290889 is an apocalyptic number.

It is an amenable number.

709290889 is a deficient number, since it is larger than the sum of its proper divisors (546491).

709290889 is a wasteful number, since it uses less digits than its factorization.

709290889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546490.

The product of its (nonzero) digits is 653184, while the sum is 52.

The square root of 709290889 is about 26632.5156340891. The cubic root of 709290889 is about 891.8150431434.

The spelling of 709290889 in words is "seven hundred nine million, two hundred ninety thousand, eight hundred eighty-nine".