1289327 has 12 divisors (see below), whose sum is σ = 1447320. Its totient is φ = 1141440.

The previous prime is 1289303. The next prime is 1289329. The reversal of 1289327 is 7239821.

It is not a de Polignac number, because 1289327 - 2¹² = 1285231 is a prime.

It is a super-2 number, since 2×1289327² = 3324728225858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1289293 and 1289302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1289329) 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 11 ways as a sum of consecutive naturals, for example, 21824 + ... + 21882.

It is an arithmetic number, because the mean of its divisors is an integer number (120610).

2^1289327 is an apocalyptic number.

1289327 is a deficient number, since it is larger than the sum of its proper divisors (157993).

1289327 is an equidigital number, since it uses as much as digits as its factorization.

1289327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 113 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 1289327 is about 1135.4853587784. The cubic root of 1289327 is about 108.8397893234.

The spelling of 1289327 in words is "one million, two hundred eighty-nine thousand, three hundred twenty-seven".