993128041 has 4 divisors (see below), whose sum is σ = 993196800. Its totient is φ = 993059284.

The previous prime is 993128027. The next prime is 993128093. The reversal of 993128041 is 140821399.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 140821399 = 97 ⋅1451767.

It is a cyclic number.

It is not a de Polignac number, because 993128041 - 2⁹ = 993127529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (993128021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3421 + ... + 44698.

It is an arithmetic number, because the mean of its divisors is an integer number (248299200).

Almost surely, 2^993128041 is an apocalyptic number.

It is an amenable number.

993128041 is a deficient number, since it is larger than the sum of its proper divisors (68759).

993128041 is a wasteful number, since it uses less digits than its factorization.

993128041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68758.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 993128041 is about 31513.9340768492. The cubic root of 993128041 is about 997.7040797845.

The spelling of 993128041 in words is "nine hundred ninety-three million, one hundred twenty-eight thousand, forty-one".