981359 has 4 divisors (see below), whose sum is σ = 1039104. Its totient is φ = 923616.

The previous prime is 981319. The next prime is 981373. The reversal of 981359 is 953189.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 953189 = 23 ⋅41443.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-981359 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981319) 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, 28847 + ... + 28880.

It is an arithmetic number, because the mean of its divisors is an integer number (259776).

2⁹⁸¹³⁵⁹ is an apocalyptic number.

981359 is a deficient number, since it is larger than the sum of its proper divisors (57745).

981359 is a wasteful number, since it uses less digits than its factorization.

981359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57744.

The product of its digits is 9720, while the sum is 35.

The square root of 981359 is about 990.6356545168. The cubic root of 981359 is about 99.3747318796.

The spelling of 981359 in words is "nine hundred eighty-one thousand, three hundred fifty-nine".