9899409199 has 4 divisors (see below), whose sum is σ = 9904056760. Its totient is φ = 9894761640.

The previous prime is 9899409197. The next prime is 9899409209. The reversal of 9899409199 is 9919049989.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9919049989 = 23 ⋅431263043.

It is a cyclic number.

It is not a de Polignac number, because 9899409199 - 2¹ = 9899409197 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 (9899409193) 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, 2320584 + ... + 2324845.

It is an arithmetic number, because the mean of its divisors is an integer number (2476014190).

Almost surely, 2^9899409199 is an apocalyptic number.

9899409199 is a deficient number, since it is larger than the sum of its proper divisors (4647561).

9899409199 is a wasteful number, since it uses less digits than its factorization.

9899409199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4647560.

The product of its (nonzero) digits is 17006112, while the sum is 67.

The square root of 9899409199 is about 99495.7747796357. The cubic root of 9899409199 is about 2147.1864548649.

The spelling of 9899409199 in words is "nine billion, eight hundred ninety-nine million, four hundred nine thousand, one hundred ninety-nine".