1289373 has 4 divisors (see below), whose sum is σ = 1719168. Its totient is φ = 859580.

The previous prime is 1289371. The next prime is 1289381. The reversal of 1289373 is 3739821.

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.

It is a cyclic number.

It is not a de Polignac number, because 1289373 - 2¹ = 1289371 is a prime.

It is a D-number.

1289373 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1289371) 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, 214893 + ... + 214898.

It is an arithmetic number, because the mean of its divisors is an integer number (429792).

2^1289373 is an apocalyptic number.

It is an amenable number.

1289373 is a deficient number, since it is larger than the sum of its proper divisors (429795).

1289373 is an equidigital number, since it uses as much as digits as its factorization.

1289373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429794.

The product of its digits is 9072, while the sum is 33.

The square root of 1289373 is about 1135.5056142530. The cubic root of 1289373 is about 108.8410836862.

The spelling of 1289373 in words is "one million, two hundred eighty-nine thousand, three hundred seventy-three".