1296389 has 12 divisors (see below), whose sum is σ = 1429920. Its totient is φ = 1171800.

The previous prime is 1296371. The next prime is 1296391. The reversal of 1296389 is 9836921.

It is not a de Polignac number, because 1296389 - 2¹² = 1292293 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18224 + ... + 18294.

It is an arithmetic number, because the mean of its divisors is an integer number (119160).

2^1296389 is an apocalyptic number.

1296389 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1296389 is a deficient number, since it is larger than the sum of its proper divisors (133531).

1296389 is an equidigital number, since it uses as much as digits as its factorization.

1296389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 121 counting only the distinct ones).

The product of its digits is 23328, while the sum is 38.

The square root of 1296389 is about 1138.5907956768. The cubic root of 1296389 is about 109.0381428107.

The spelling of 1296389 in words is "one million, two hundred ninety-six thousand, three hundred eighty-nine".