1489749 has 4 divisors (see below), whose sum is σ = 1986336. Its totient is φ = 993164.

The previous prime is 1489729. The next prime is 1489751. The reversal of 1489749 is 9479841.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1489749 - 2⁵ = 1489717 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 1489749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1489729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248289 + ... + 248294.

It is an arithmetic number, because the mean of its divisors is an integer number (496584).

2^1489749 is an apocalyptic number.

It is an amenable number.

1489749 is a deficient number, since it is larger than the sum of its proper divisors (496587).

1489749 is an equidigital number, since it uses as much as digits as its factorization.

1489749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496586.

The product of its digits is 72576, while the sum is 42.

The square root of 1489749 is about 1220.5527436371. The cubic root of 1489749 is about 114.2100620605.

The spelling of 1489749 in words is "one million, four hundred eighty-nine thousand, seven hundred forty-nine".