9859099849 has 9 divisors (see below), whose sum is σ = 10190576109. Its totient is φ = 9538085580.

The previous prime is 9859099843. The next prime is 9859099853. The reversal of 9859099849 is 9489909589.

The square root of 9859099849 is 99293.

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

It is not a de Polignac number, because 9859099849 - 2⁷ = 9859099721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9859099843) 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, 3076482 + ... + 3079684.

Almost surely, 2^9859099849 is an apocalyptic number.

9859099849 is the 99293-rd square number.

9859099849 is the 49647-th centered octagonal number.

It is an amenable number.

9859099849 is a deficient number, since it is larger than the sum of its proper divisors (331476260).

9859099849 is an frugal number, since it uses more digits than its factorization.

9859099849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6468 (or 3234 counting only the distinct ones).

The product of its (nonzero) digits is 75582720, while the sum is 70.

The cubic root of 9859099849 is about 2144.2681179720.

The spelling of 9859099849 in words is "nine billion, eight hundred fifty-nine million, ninety-nine thousand, eight hundred forty-nine".