999993948 has 12 divisors (see below), whose sum is σ = 2333319240. Its totient is φ = 333331312.

The previous prime is 999993947. The next prime is 999993971. The reversal of 999993948 is 849399999.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999993947) 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 3 ways as a sum of consecutive naturals, for example, 41666403 + ... + 41666426.

It is an arithmetic number, because the mean of its divisors is an integer number (194443270).

Almost surely, 2^999993948 is an apocalyptic number.

It is an amenable number.

999993948 is an abundant number, since it is smaller than the sum of its proper divisors (1333325292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999993948 is a wasteful number, since it uses less digits than its factorization.

999993948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83332836 (or 83332834 counting only the distinct ones).

The product of its digits is 51018336, while the sum is 69.

The square root of 999993948 is about 31622.6809110170. The cubic root of 999993948 is about 999.9979826626.

The spelling of 999993948 in words is "nine hundred ninety-nine million, nine hundred ninety-three thousand, nine hundred forty-eight".