39983999 has 12 divisors (see below), whose sum is σ = 46040040. Its totient is φ = 34432560.

The previous prime is 39983989. The next prime is 39984019. The reversal of 39983999 is 99938993.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-39983999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39983969) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1064 + ... + 9005.

It is an arithmetic number, because the mean of its divisors is an integer number (3836670).

Almost surely, 2^39983999 is an apocalyptic number.

39983999 is a deficient number, since it is larger than the sum of its proper divisors (6056041).

39983999 is a wasteful number, since it uses less digits than its factorization.

39983999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10118 (or 10099 counting only the distinct ones).

The product of its digits is 4251528, while the sum is 59.

The square root of 39983999 is about 6323.2902036835. The cubic root of 39983999 is about 341.9495810448.

It can be divided in two parts, 3998 and 3999, that added together give a palindrome (7997).

The spelling of 39983999 in words is "thirty-nine million, nine hundred eighty-three thousand, nine hundred ninety-nine".