1489661 has 2 divisors, whose sum is σ = 1489662. Its totient is φ = 1489660.

The previous prime is 1489637. The next prime is 1489667. The reversal of 1489661 is 1669841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1452025 + 37636 = 1205^2 + 194^2 .

It is a cyclic number.

It is not a de Polignac number, because 1489661 - 2⁶ = 1489597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1489667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744830 + 744831.

It is an arithmetic number, because the mean of its divisors is an integer number (744831).

2^1489661 is an apocalyptic number.

It is an amenable number.

1489661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1489661 is an equidigital number, since it uses as much as digits as its factorization.

1489661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 1489661 is about 1220.5166938637. The cubic root of 1489661 is about 114.2078132066.

The spelling of 1489661 in words is "one million, four hundred eighty-nine thousand, six hundred sixty-one".