1466989 has 4 divisors (see below), whose sum is σ = 1491100. Its totient is φ = 1442880.

The previous prime is 1466957. The next prime is 1466999. The reversal of 1466989 is 9896641.

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

It can be written as a sum of positive squares in 2 ways, for example, as 311364 + 1155625 = 558^2 + 1075^2 .

It is a cyclic number.

It is not a de Polignac number, because 1466989 - 2⁵ = 1466957 is a prime.

It is a super-2 number, since 2×1466989² = 4304113452242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1466929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11964 + ... + 12085.

It is an arithmetic number, because the mean of its divisors is an integer number (372775).

2^1466989 is an apocalyptic number.

It is an amenable number.

1466989 is a deficient number, since it is larger than the sum of its proper divisors (24111).

1466989 is an equidigital number, since it uses as much as digits as its factorization.

1466989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24110.

The product of its digits is 93312, while the sum is 43.

The square root of 1466989 is about 1211.1932133231. The cubic root of 1466989 is about 113.6254507629.

The spelling of 1466989 in words is "one million, four hundred sixty-six thousand, nine hundred eighty-nine".