994387 has 4 divisors (see below), whose sum is σ = 1026496. Its totient is φ = 962280.

The previous prime is 994369. The next prime is 994391. The reversal of 994387 is 783499.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783499 = 53 ⋅14783.

It is a cyclic number.

It is not a de Polignac number, because 994387 - 2¹⁵ = 961619 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (994307) 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, 16008 + ... + 16069.

It is an arithmetic number, because the mean of its divisors is an integer number (256624).

2⁹⁹⁴³⁸⁷ is an apocalyptic number.

994387 is a deficient number, since it is larger than the sum of its proper divisors (32109).

994387 is a wasteful number, since it uses less digits than its factorization.

994387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32108.

The product of its digits is 54432, while the sum is 40.

The square root of 994387 is about 997.1895506873. The cubic root of 994387 is about 99.8125488402.

The spelling of 994387 in words is "nine hundred ninety-four thousand, three hundred eighty-seven".