993934868 has 6 divisors (see below), whose sum is σ = 1739386026. Its totient is φ = 496967432.

The previous prime is 993934867. The next prime is 993934891. The reversal of 993934868 is 868439399.

It can be written as a sum of positive squares in only one way, i.e., 947531524 + 46403344 = 30782^2 + 6812^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993934867) 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 as a sum of consecutive naturals, namely, 124241855 + ... + 124241862.

It is an arithmetic number, because the mean of its divisors is an integer number (289897671).

Almost surely, 2^993934868 is an apocalyptic number.

It is an amenable number.

993934868 is a deficient number, since it is larger than the sum of its proper divisors (745451158).

993934868 is a wasteful number, since it uses less digits than its factorization.

993934868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248483721 (or 248483719 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 59.

The square root of 993934868 is about 31526.7325931502. The cubic root of 993934868 is about 997.9741881911.

The spelling of 993934868 in words is "nine hundred ninety-three million, nine hundred thirty-four thousand, eight hundred sixty-eight".