9955995599 has 4 divisors (see below), whose sum is σ = 10861086120. Its totient is φ = 9050905080.

The previous prime is 9955995593. The next prime is 9955995629.

9955995599 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9955995599 - 2¹⁶ = 9955930063 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9955995593) 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, 452545244 + ... + 452545265.

It is an arithmetic number, because the mean of its divisors is an integer number (2715271530).

Almost surely, 2^9955995599 is an apocalyptic number.

9955995599 is a deficient number, since it is larger than the sum of its proper divisors (905090521).

9955995599 is a wasteful number, since it uses less digits than its factorization.

9955995599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905090520.

The product of its digits is 332150625, while the sum is 74.

The square root of 9955995599 is about 99779.7354125576. The cubic root of 9955995599 is about 2151.2698897100.

The spelling of 9955995599 in words is "nine billion, nine hundred fifty-five million, nine hundred ninety-five thousand, five hundred ninety-nine".