1302389 has 4 divisors (see below), whose sum is σ = 1420800. Its totient is φ = 1183980.

The previous prime is 1302383. The next prime is 1302391. The reversal of 1302389 is 9832031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9832031 = 11 ⋅893821.

It is a cyclic number.

It is not a de Polignac number, because 1302389 - 2⁴ = 1302373 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59189 + ... + 59210.

It is an arithmetic number, because the mean of its divisors is an integer number (355200).

2^1302389 is an apocalyptic number.

It is an amenable number.

1302389 is a deficient number, since it is larger than the sum of its proper divisors (118411).

1302389 is a wasteful number, since it uses less digits than its factorization.

1302389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118410.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1302389 is about 1141.2225900323. Note that the first 3 decimals coincide. The cubic root of 1302389 is about 109.2061022052.

The spelling of 1302389 in words is "one million, three hundred two thousand, three hundred eighty-nine".