981884 has 6 divisors (see below), whose sum is σ = 1718304. Its totient is φ = 490940.

The previous prime is 981823. The next prime is 981887. The reversal of 981884 is 488189.

It is an Ulam number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981887) by changing a digit.

981884 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122732 + ... + 122739.

It is an arithmetic number, because the mean of its divisors is an integer number (286384).

2⁹⁸¹⁸⁸⁴ is an apocalyptic number.

It is an amenable number.

981884 is a deficient number, since it is larger than the sum of its proper divisors (736420).

981884 is a wasteful number, since it uses less digits than its factorization.

981884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245475 (or 245473 counting only the distinct ones).

The product of its digits is 18432, while the sum is 38.

The square root of 981884 is about 990.9006004640. The cubic root of 981884 is about 99.3924496341.

The spelling of 981884 in words is "nine hundred eighty-one thousand, eight hundred eighty-four".