1489813 has 4 divisors (see below), whose sum is σ = 1604428. Its totient is φ = 1375200.

The previous prime is 1489799. The next prime is 1489819. The reversal of 1489813 is 3189841.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3189841 = 41 ⋅77801.

It can be written as a sum of positive squares in 2 ways, for example, as 485809 + 1004004 = 697^2 + 1002^2 .

It is a cyclic number.

It is not a de Polignac number, because 1489813 - 2⁵ = 1489781 is a prime.

It is a Duffinian number.

1489813 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1489819) 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, 57288 + ... + 57313.

It is an arithmetic number, because the mean of its divisors is an integer number (401107).

2^1489813 is an apocalyptic number.

1489813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1489813 is a deficient number, since it is larger than the sum of its proper divisors (114615).

1489813 is a wasteful number, since it uses less digits than its factorization.

1489813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114614.

The product of its digits is 6912, while the sum is 34.

The square root of 1489813 is about 1220.5789609853. The cubic root of 1489813 is about 114.2116975350.

The spelling of 1489813 in words is "one million, four hundred eighty-nine thousand, eight hundred thirteen".