9957860209 has 8 divisors (see below), whose sum is σ = 11156718528. Its totient is φ = 8807934960.

The previous prime is 9957860201. The next prime is 9957860251. The reversal of 9957860209 is 9020687599.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9957860209 - 2³ = 9957860201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9957860209.

It is not an unprimeable number, because it can be changed into a prime (9957860201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12232837 + ... + 12233650.

It is an arithmetic number, because the mean of its divisors is an integer number (1394589816).

Almost surely, 2^9957860209 is an apocalyptic number.

It is an amenable number.

9957860209 is a deficient number, since it is larger than the sum of its proper divisors (1198858319).

9957860209 is a wasteful number, since it uses less digits than its factorization.

9957860209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24466535.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The square root of 9957860209 is about 99789.0786058274. The cubic root of 9957860209 is about 2151.4041816188.

The spelling of 9957860209 in words is "nine billion, nine hundred fifty-seven million, eight hundred sixty thousand, two hundred nine".