1289959 has 4 divisors (see below), whose sum is σ = 1407240. Its totient is φ = 1172680.

The previous prime is 1289933. The next prime is 1289963. The reversal of 1289959 is 9599821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1289959 - 2⁵ = 1289927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1289969) 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, 58624 + ... + 58645.

It is an arithmetic number, because the mean of its divisors is an integer number (351810).

2^1289959 is an apocalyptic number.

1289959 is a deficient number, since it is larger than the sum of its proper divisors (117281).

1289959 is a wasteful number, since it uses less digits than its factorization.

1289959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117280.

The product of its digits is 58320, while the sum is 43.

The square root of 1289959 is about 1135.7636197731. The cubic root of 1289959 is about 108.8575700494.

The spelling of 1289959 in words is "one million, two hundred eighty-nine thousand, nine hundred fifty-nine".