999728003 has 2 divisors, whose sum is σ = 999728004. Its totient is φ = 999728002.

The previous prime is 999727999. The next prime is 999728033. The reversal of 999728003 is 300827999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999728003 - 2² = 999727999 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (999728033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499864001 + 499864002.

It is an arithmetic number, because the mean of its divisors is an integer number (499864002).

Almost surely, 2^999728003 is an apocalyptic number.

999728003 is a deficient number, since it is larger than the sum of its proper divisors (1).

999728003 is an equidigital number, since it uses as much as digits as its factorization.

999728003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 999728003 is about 31618.4756590194. The cubic root of 999728003 is about 999.9093261118.

The spelling of 999728003 in words is "nine hundred ninety-nine million, seven hundred twenty-eight thousand, three".