9899409201 has 16 divisors (see below), whose sum is σ = 14533717248. Its totient is φ = 5943568400.

The previous prime is 9899409197. The next prime is 9899409209. The reversal of 9899409201 is 1029049989.

It is a happy number.

It is not a de Polignac number, because 9899409201 - 2² = 9899409197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9899409209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1398255 + ... + 1405316.

It is an arithmetic number, because the mean of its divisors is an integer number (908357328).

Almost surely, 2^9899409201 is an apocalyptic number.

It is an amenable number.

9899409201 is a deficient number, since it is larger than the sum of its proper divisors (4634308047).

9899409201 is a wasteful number, since it uses less digits than its factorization.

9899409201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803692.

The product of its (nonzero) digits is 419904, while the sum is 51.

The square root of 9899409201 is about 99495.7747896864. The cubic root of 9899409201 is about 2147.1864550095.

The spelling of 9899409201 in words is "nine billion, eight hundred ninety-nine million, four hundred nine thousand, two hundred one".