981392 has 20 divisors (see below), whose sum is σ = 1926960. Its totient is φ = 484128.

The previous prime is 981391. The next prime is 981397. The reversal of 981392 is 293189.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 981392.

It is not an unprimeable number, because it can be changed into a prime (981391) 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, 959 + ... + 1697.

It is an arithmetic number, because the mean of its divisors is an integer number (96348).

2⁹⁸¹³⁹² is an apocalyptic number.

It is an amenable number.

981392 is a deficient number, since it is larger than the sum of its proper divisors (945568).

981392 is a wasteful number, since it uses less digits than its factorization.

981392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830 (or 824 counting only the distinct ones).

The product of its digits is 3888, while the sum is 32.

The square root of 981392 is about 990.6523103491. The cubic root of 981392 is about 99.3758457531.

The spelling of 981392 in words is "nine hundred eighty-one thousand, three hundred ninety-two".