999303973 has 8 divisors (see below), whose sum is σ = 1006093440. Its totient is φ = 992532240.

The previous prime is 999303919. The next prime is 999304021. The reversal of 999303973 is 379303999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999303973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 999303973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999304973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120288 + ... + 128326.

It is an arithmetic number, because the mean of its divisors is an integer number (125761680).

Almost surely, 2^999303973 is an apocalyptic number.

It is an amenable number.

999303973 is a deficient number, since it is larger than the sum of its proper divisors (6789467).

999303973 is a wasteful number, since it uses less digits than its factorization.

999303973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8867.

The product of its (nonzero) digits is 1240029, while the sum is 52.

The square root of 999303973 is about 31611.7695328813. The cubic root of 999303973 is about 999.7679371510.

The spelling of 999303973 in words is "nine hundred ninety-nine million, three hundred three thousand, nine hundred seventy-three".