981408 has 24 divisors (see below), whose sum is σ = 2576448. Its totient is φ = 327104.

The previous prime is 981397. The next prime is 981419. The reversal of 981408 is 804189.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (981397) and next prime (981419).

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

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, 5016 + ... + 5207.

It is an arithmetic number, because the mean of its divisors is an integer number (107352).

2⁹⁸¹⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

981408 is an abundant number, since it is smaller than the sum of its proper divisors (1595040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

981408 is a wasteful number, since it uses less digits than its factorization.

981408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10236 (or 10228 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 981408 is about 990.6603858033. The cubic root of 981408 is about 99.3763858040.

The spelling of 981408 in words is "nine hundred eighty-one thousand, four hundred eight".