993890075 has 6 divisors (see below), whose sum is σ = 1232423724. Its totient is φ = 795112040.

The previous prime is 993890011. The next prime is 993890077. The reversal of 993890075 is 570098399.

It is not a de Polignac number, because 993890075 - 2⁶ = 993890011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (993890077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19877777 + ... + 19877826.

It is an arithmetic number, because the mean of its divisors is an integer number (205403954).

Almost surely, 2^993890075 is an apocalyptic number.

993890075 is a deficient number, since it is larger than the sum of its proper divisors (238533649).

993890075 is a wasteful number, since it uses less digits than its factorization.

993890075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39755613 (or 39755608 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 993890075 is about 31526.0221880275. The cubic root of 993890075 is about 997.9591962868.

The spelling of 993890075 in words is "nine hundred ninety-three million, eight hundred ninety thousand, seventy-five".