1306989 has 8 divisors (see below), whose sum is σ = 1936320. Its totient is φ = 871308.

The previous prime is 1306979. The next prime is 1306997. The reversal of 1306989 is 9896031.

It is not a de Polignac number, because 1306989 - 2⁴ = 1306973 is a prime.

It is a super-2 number, since 2×1306989² = 3416440492242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306979) 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 7 ways as a sum of consecutive naturals, for example, 24177 + ... + 24230.

It is an arithmetic number, because the mean of its divisors is an integer number (242040).

2^1306989 is an apocalyptic number.

It is an amenable number.

1306989 is a deficient number, since it is larger than the sum of its proper divisors (629331).

1306989 is an equidigital number, since it uses as much as digits as its factorization.

1306989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48416 (or 48410 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 1306989 is about 1143.2361960680. The cubic root of 1306989 is about 109.3345220556.

The spelling of 1306989 in words is "one million, three hundred six thousand, nine hundred eighty-nine".