984381 has 4 divisors (see below), whose sum is σ = 1312512. Its totient is φ = 656252.

The previous prime is 984367. The next prime is 984383. The reversal of 984381 is 183489.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 984381 - 2⁵ = 984349 is a prime.

It is a super-2 number, since 2×984381² = 1938011906322, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (984383) 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, 164061 + ... + 164066.

It is an arithmetic number, because the mean of its divisors is an integer number (328128).

2⁹⁸⁴³⁸¹ is an apocalyptic number.

It is an amenable number.

984381 is a deficient number, since it is larger than the sum of its proper divisors (328131).

984381 is a wasteful number, since it uses less digits than its factorization.

984381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328130.

The product of its digits is 6912, while the sum is 33.

The square root of 984381 is about 992.1597653604. The cubic root of 984381 is about 99.4766323078.

The spelling of 984381 in words is "nine hundred eighty-four thousand, three hundred eighty-one".