1289361 has 8 divisors (see below), whose sum is σ = 1735360. Its totient is φ = 851472.

The previous prime is 1289341. The next prime is 1289363. The reversal of 1289361 is 1639821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1289361 - 2⁵ = 1289329 is a prime.

It is the 1136-th Hogben number.

It is a Duffinian number.

1289361 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1289363) by changing a digit.

It is a nontrivial repunit in base 1135.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1645 + ... + 2298.

It is an arithmetic number, because the mean of its divisors is an integer number (216920).

2^1289361 is an apocalyptic number.

It is an amenable number.

1289361 is a deficient number, since it is larger than the sum of its proper divisors (445999).

1289361 is a wasteful number, since it uses less digits than its factorization.

1289361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4055.

The product of its digits is 2592, while the sum is 30.

The square root of 1289361 is about 1135.5003302509. The cubic root of 1289361 is about 108.8407460293.

The spelling of 1289361 in words is "one million, two hundred eighty-nine thousand, three hundred sixty-one".