1289013 has 24 divisors (see below), whose sum is σ = 1953504. Its totient is φ = 755040.

The previous prime is 1289009. The next prime is 1289027. The reversal of 1289013 is 3109821.

It is not a de Polignac number, because 1289013 - 2² = 1289009 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1289003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19206 + ... + 19272.

It is an arithmetic number, because the mean of its divisors is an integer number (81396).

2^1289013 is an apocalyptic number.

It is an amenable number.

1289013 is a deficient number, since it is larger than the sum of its proper divisors (664491).

1289013 is a wasteful number, since it uses less digits than its factorization.

1289013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1289013 is about 1135.3470834947. The cubic root of 1289013 is about 108.8309530678.

The spelling of 1289013 in words is "one million, two hundred eighty-nine thousand, thirteen".