999983924 has 6 divisors (see below), whose sum is σ = 1749971874. Its totient is φ = 499991960.

The previous prime is 999983923. The next prime is 999983947. The reversal of 999983924 is 429389999.

It can be written as a sum of positive squares in only one way, i.e., 511573924 + 488410000 = 22618^2 + 22100^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999983921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124997987 + ... + 124997994.

It is an arithmetic number, because the mean of its divisors is an integer number (291661979).

Almost surely, 2^999983924 is an apocalyptic number.

It is an amenable number.

999983924 is a deficient number, since it is larger than the sum of its proper divisors (749987950).

999983924 is a wasteful number, since it uses less digits than its factorization.

999983924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249995985 (or 249995983 counting only the distinct ones).

The product of its digits is 11337408, while the sum is 62.

The square root of 999983924 is about 31622.5224167839. The cubic root of 999983924 is about 999.9946413046.

The spelling of 999983924 in words is "nine hundred ninety-nine million, nine hundred eighty-three thousand, nine hundred twenty-four".