999444983 has 2 divisors, whose sum is σ = 999444984. Its totient is φ = 999444982.

The previous prime is 999444917. The next prime is 999444997. The reversal of 999444983 is 389444999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999444983 - 2⁸ = 999444727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999444683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499722491 + 499722492.

It is an arithmetic number, because the mean of its divisors is an integer number (499722492).

Almost surely, 2^999444983 is an apocalyptic number.

999444983 is a deficient number, since it is larger than the sum of its proper divisors (1).

999444983 is an equidigital number, since it uses as much as digits as its factorization.

999444983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10077696, while the sum is 59.

The square root of 999444983 is about 31613.9997943949. Note that the first 3 decimals coincide. The cubic root of 999444983 is about 999.8149600957.

The spelling of 999444983 in words is "nine hundred ninety-nine million, four hundred forty-four thousand, nine hundred eighty-three".