994145 has 4 divisors (see below), whose sum is σ = 1192980. Its totient is φ = 795312.

The previous prime is 994141. The next prime is 994163. The reversal of 994145 is 541499.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 595984 + 398161 = 772^2 + 631^2 .

It is a cyclic number.

It is not a de Polignac number, because 994145 - 2² = 994141 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994141) 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 3 ways as a sum of consecutive naturals, for example, 99410 + ... + 99419.

It is an arithmetic number, because the mean of its divisors is an integer number (298245).

2⁹⁹⁴¹⁴⁵ is an apocalyptic number.

It is an amenable number.

994145 is a deficient number, since it is larger than the sum of its proper divisors (198835).

994145 is a wasteful number, since it uses less digits than its factorization.

994145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198834.

The product of its digits is 6480, while the sum is 32.

The square root of 994145 is about 997.0682022811. The cubic root of 994145 is about 99.8044511892.

The spelling of 994145 in words is "nine hundred ninety-four thousand, one hundred forty-five".