993440071 has 8 divisors (see below), whose sum is σ = 1075292064. Its totient is φ = 912364320.

The previous prime is 993440059. The next prime is 993440111. The reversal of 993440071 is 170044399.

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 993440071 - 2¹¹ = 993438023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 993440071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (993444071) 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, 191395 + ... + 196516.

It is an arithmetic number, because the mean of its divisors is an integer number (134411508).

Almost surely, 2^993440071 is an apocalyptic number.

993440071 is a deficient number, since it is larger than the sum of its proper divisors (81851993).

993440071 is a wasteful number, since it uses less digits than its factorization.

993440071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388121.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 993440071 is about 31518.8843552560. The cubic root of 993440071 is about 997.8085580904.

It can be divided in two parts, 9934 and 40071, that added together give a palindrome (50005).

The spelling of 993440071 in words is "nine hundred ninety-three million, four hundred forty thousand, seventy-one".