728942999 has 8 divisors (see below), whose sum is σ = 774101040. Its totient is φ = 684464256.

The previous prime is 728942989. The next prime is 728943001. The reversal of 728942999 is 999249827.

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-728942999 is a prime.

It is a super-2 number, since 2×728942999² = 1062715791582228002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728942989) 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 7 ways as a sum of consecutive naturals, for example, 167612 + ... + 171905.

It is an arithmetic number, because the mean of its divisors is an integer number (96762630).

Almost surely, 2^728942999 is an apocalyptic number.

728942999 is a deficient number, since it is larger than the sum of its proper divisors (45158041).

728942999 is a wasteful number, since it uses less digits than its factorization.

728942999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339649.

The product of its digits is 5878656, while the sum is 59.

The square root of 728942999 is about 26998.9444052911. The cubic root of 728942999 is about 899.9765421869.

The spelling of 728942999 in words is "seven hundred twenty-eight million, nine hundred forty-two thousand, nine hundred ninety-nine".