849088709 has 18 divisors (see below), whose sum is σ = 1023098130. Its totient is φ = 701785056.

The previous prime is 849088703. The next prime is 849088727. The reversal of 849088709 is 907880948.

It can be written as a sum of positive squares in 3 ways, for example, as 13300609 + 835788100 = 3647^2 + 28910^2 .

It is not a de Polignac number, because 849088709 - 2⁴ = 849088693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849088703) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1098047 + ... + 1098819.

It is an arithmetic number, because the mean of its divisors is an integer number (56838785).

Almost surely, 2^849088709 is an apocalyptic number.

It is an amenable number.

849088709 is a deficient number, since it is larger than the sum of its proper divisors (174009421).

849088709 is an frugal number, since it uses more digits than its factorization.

849088709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589 (or 809 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 53.

The square root of 849088709 is about 29139.1267714048. The cubic root of 849088709 is about 946.9295918145.

The spelling of 849088709 in words is "eight hundred forty-nine million, eighty-eight thousand, seven hundred nine".