1289275 has 12 divisors (see below), whose sum is σ = 1722112. Its totient is φ = 951840.

The previous prime is 1289273. The next prime is 1289287. The reversal of 1289275 is 5729821.

It is not a de Polignac number, because 1289275 - 2¹ = 1289273 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1289275.

It is not an unprimeable number, because it can be changed into a prime (1289273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1659 + ... + 2308.

2^1289275 is an apocalyptic number.

1289275 is a deficient number, since it is larger than the sum of its proper divisors (432837).

1289275 is a wasteful number, since it uses less digits than its factorization.

1289275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3990 (or 3985 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 1289275 is about 1135.4624608502. The cubic root of 1289275 is about 108.8383260935.

The spelling of 1289275 in words is "one million, two hundred eighty-nine thousand, two hundred seventy-five".