993161 has 8 divisors (see below), whose sum is σ = 1077384. Its totient is φ = 910080.

The previous prime is 993137. The next prime is 993169. The reversal of 993161 is 161399.

It can be written as a sum of positive squares in 4 ways, for example, as 3136 + 990025 = 56^2 + 995^2 .

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 993161 - 2¹⁴ = 976777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 993161.

It is not an unprimeable number, because it can be changed into a prime (993169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2975 + ... + 3291.

It is an arithmetic number, because the mean of its divisors is an integer number (134673).

2⁹⁹³¹⁶¹ is an apocalyptic number.

It is an amenable number.

993161 is a deficient number, since it is larger than the sum of its proper divisors (84223).

993161 is a wasteful number, since it uses less digits than its factorization.

993161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571.

The product of its digits is 1458, while the sum is 29.

The square root of 993161 is about 996.5746334319. The cubic root of 993161 is about 99.7715116617.

The spelling of 993161 in words is "nine hundred ninety-three thousand, one hundred sixty-one".