994381 has 8 divisors (see below), whose sum is σ = 1089720. Its totient is φ = 903168.

The previous prime is 994369. The next prime is 994391. The reversal of 994381 is 183499.

It can be written as a sum of positive squares in 4 ways, for example, as 455625 + 538756 = 675^2 + 734^2 .

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 994381 - 2⁹ = 993869 is a prime.

It is a super-2 number, since 2×994381² = 1977587146322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994321) 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, 516 + ... + 1501.

It is an arithmetic number, because the mean of its divisors is an integer number (136215).

2⁹⁹⁴³⁸¹ is an apocalyptic number.

It is an amenable number.

994381 is a deficient number, since it is larger than the sum of its proper divisors (95339).

994381 is a wasteful number, since it uses less digits than its factorization.

994381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063.

The product of its digits is 7776, while the sum is 34.

The square root of 994381 is about 997.1865422277. The cubic root of 994381 is about 99.8123480879.

The spelling of 994381 in words is "nine hundred ninety-four thousand, three hundred eighty-one".