981749 has 8 divisors (see below), whose sum is σ = 1043040. Its totient is φ = 921456.

The previous prime is 981731. The next prime is 981769. The reversal of 981749 is 947189.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 981749 - 2⁸ = 981493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2939 + ... + 3255.

It is an arithmetic number, because the mean of its divisors is an integer number (130380).

2⁹⁸¹⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

981749 is a deficient number, since it is larger than the sum of its proper divisors (61291).

981749 is a wasteful number, since it uses less digits than its factorization.

981749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499.

The product of its digits is 18144, while the sum is 38.

The square root of 981749 is about 990.8324782727. The cubic root of 981749 is about 99.3878942434.

The spelling of 981749 in words is "nine hundred eighty-one thousand, seven hundred forty-nine".