1289793 has 4 divisors (see below), whose sum is σ = 1719728. Its totient is φ = 859860.

The previous prime is 1289789. The next prime is 1289801. The reversal of 1289793 is 3979821.

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: 3979821 = 3 ⋅1326607.

It is not a de Polignac number, because 1289793 - 2² = 1289789 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1289713) 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, 214963 + ... + 214968.

It is an arithmetic number, because the mean of its divisors is an integer number (429932).

2^1289793 is an apocalyptic number.

It is an amenable number.

1289793 is a deficient number, since it is larger than the sum of its proper divisors (429935).

1289793 is an equidigital number, since it uses as much as digits as its factorization.

1289793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429934.

The product of its digits is 27216, while the sum is 39.

The square root of 1289793 is about 1135.6905388353. The cubic root of 1289793 is about 108.8529003579.

The spelling of 1289793 in words is "one million, two hundred eighty-nine thousand, seven hundred ninety-three".