709213122 has 18 divisors (see below), whose sum is σ = 1536873273. Its totient is φ = 236366712.

The previous prime is 709213111. The next prime is 709213181. The reversal of 709213122 is 221312907.

709213122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 460488681 + 248724441 = 21459^2 + 15771^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=18831.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 109848 + ... + 116124.

Almost surely, 2^709213122 is an apocalyptic number.

709213122 is an abundant number, since it is smaller than the sum of its proper divisors (827660151).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

709213122 is an frugal number, since it uses more digits than its factorization.

709213122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12562 (or 6282 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 709213122 is about 26631.0555930478. The cubic root of 709213122 is about 891.7824489396.

The spelling of 709213122 in words is "seven hundred nine million, two hundred thirteen thousand, one hundred twenty-two".