1289534 has 4 divisors (see below), whose sum is σ = 1934304. Its totient is φ = 644766.

The previous prime is 1289531. The next prime is 1289537. The reversal of 1289534 is 4359821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4359821 = 37 ⋅117833.

It is an interprime number because it is at equal distance from previous prime (1289531) and next prime (1289537).

It is a self number, because there is not a number n which added to its sum of digits gives 1289534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1289531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322382 + ... + 322385.

It is an arithmetic number, because the mean of its divisors is an integer number (483576).

2^1289534 is an apocalyptic number.

1289534 is a deficient number, since it is larger than the sum of its proper divisors (644770).

1289534 is an equidigital number, since it uses as much as digits as its factorization.

1289534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644769.

The product of its digits is 8640, while the sum is 32.

The square root of 1289534 is about 1135.5765055689. The cubic root of 1289534 is about 108.8456137136.

The spelling of 1289534 in words is "one million, two hundred eighty-nine thousand, five hundred thirty-four".