9955983669 has 4 divisors (see below), whose sum is σ = 13274644896. Its totient is φ = 6637322444.

The previous prime is 9955983659. The next prime is 9955983671. The reversal of 9955983669 is 9663895599.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9955983669 - 2²⁰ = 9954935093 is a prime.

It is a super-2 number, since 2×9955983669² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9955983659) 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, 1659330609 + ... + 1659330614.

It is an arithmetic number, because the mean of its divisors is an integer number (3318661224).

Almost surely, 2^9955983669 is an apocalyptic number.

It is an amenable number.

9955983669 is a deficient number, since it is larger than the sum of its proper divisors (3318661227).

9955983669 is a wasteful number, since it uses less digits than its factorization.

9955983669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318661226.

The product of its digits is 141717600, while the sum is 69.

The square root of 9955983669 is about 99779.6756308618. The cubic root of 9955983669 is about 2151.2690304402.

The spelling of 9955983669 in words is "nine billion, nine hundred fifty-five million, nine hundred eighty-three thousand, six hundred sixty-nine".