999542983 has 4 divisors (see below), whose sum is σ = 1001683800. Its totient is φ = 997402168.

The previous prime is 999542963. The next prime is 999543001. The reversal of 999542983 is 389245999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 389245999 = 3371 ⋅115469.

It is a cyclic number.

It is not a de Polignac number, because 999542983 - 2⁹ = 999542471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999542903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1069708 + ... + 1070641.

It is an arithmetic number, because the mean of its divisors is an integer number (250420950).

Almost surely, 2^999542983 is an apocalyptic number.

999542983 is a deficient number, since it is larger than the sum of its proper divisors (2140817).

999542983 is a wasteful number, since it uses less digits than its factorization.

999542983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140816.

The product of its digits is 6298560, while the sum is 58.

The square root of 999542983 is about 31615.5497026384. The cubic root of 999542983 is about 999.8476377869.

The spelling of 999542983 in words is "nine hundred ninety-nine million, five hundred forty-two thousand, nine hundred eighty-three".