981923 has 4 divisors (see below), whose sum is σ = 995448. Its totient is φ = 968400.

The previous prime is 981919. The next prime is 981941. The reversal of 981923 is 329189.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 981923 - 2² = 981919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 981923.

It is not an unprimeable number, because it can be changed into a prime (981913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6653 + ... + 6798.

It is an arithmetic number, because the mean of its divisors is an integer number (248862).

2⁹⁸¹⁹²³ is an apocalyptic number.

981923 is a deficient number, since it is larger than the sum of its proper divisors (13525).

981923 is a wasteful number, since it uses less digits than its factorization.

981923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13524.

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

The square root of 981923 is about 990.9202793363. The cubic root of 981923 is about 99.3937655581.

The spelling of 981923 in words is "nine hundred eighty-one thousand, nine hundred twenty-three".