999933649 has 8 divisors (see below), whose sum is σ = 1174747392. Its totient is φ = 839105040.

The previous prime is 999933647. The next prime is 999933667. The reversal of 999933649 is 946339999.

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

It is a cyclic number.

It is not a de Polignac number, because 999933649 - 2¹ = 999933647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (999933643) 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, 3496129 + ... + 3496414.

It is an arithmetic number, because the mean of its divisors is an integer number (146843424).

Almost surely, 2^999933649 is an apocalyptic number.

It is an amenable number.

999933649 is a deficient number, since it is larger than the sum of its proper divisors (174813743).

999933649 is a wasteful number, since it uses less digits than its factorization.

999933649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6992567.

The product of its digits is 12754584, while the sum is 61.

The square root of 999933649 is about 31621.7274828558. The cubic root of 999933649 is about 999.9778825108.

The spelling of 999933649 in words is "nine hundred ninety-nine million, nine hundred thirty-three thousand, six hundred forty-nine".