9999983 has 8 divisors (see below), whose sum is σ = 11822880.
Its totient is φ = 8275680.
The previous prime is 9999973. The next prime is 9999991. The reversal of 9999983 is 3899999.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a de Polignac number, because none of the positive numbers 2k-9999983 is a prime.
It is a Duffinian number.
It is a nialpdrome in base 10.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (9999943) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24428 + ... + 24833.
It is an arithmetic number, because the mean of its divisors is an integer number (1477860).
Almost surely, 29999983 is an apocalyptic number.
9999983 is a deficient number, since it is larger than the sum of its proper divisors (1822897).
9999983 is a wasteful number, since it uses less digits than its factorization.
9999983 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 49297.
The product of its digits is 1417176, while the sum is 56.
The square root of 9999983 is about 3162.2749722312.
The cubic root of 9999983 is about 215.4433469185.
The spelling of 9999983 in words is "nine million, nine hundred ninety-nine thousand, nine hundred eighty-three".