9994621983 has 16 divisors (see below), whose sum is σ = 13420022400. Its totient is φ = 6616260000.

The previous prime is 9994621981. The next prime is 9994621993. The reversal of 9994621983 is 3891264999.

It is not a de Polignac number, because 9994621983 - 2¹ = 9994621981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9994621981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367608 + ... + 393858.

It is an arithmetic number, because the mean of its divisors is an integer number (838751400).

Almost surely, 2^9994621983 is an apocalyptic number.

9994621983 is a deficient number, since it is larger than the sum of its proper divisors (3425400417).

9994621983 is a wasteful number, since it uses less digits than its factorization.

9994621983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27142.

The product of its digits is 7558272, while the sum is 60.

The square root of 9994621983 is about 99973.1062986441. The cubic root of 9994621983 is about 2154.0484012284.

The spelling of 9994621983 in words is "nine billion, nine hundred ninety-four million, six hundred twenty-one thousand, nine hundred eighty-three".