1207889 has 4 divisors (see below), whose sum is σ = 1211700. Its totient is φ = 1204080.

The previous prime is 1207883. The next prime is 1207903. The reversal of 1207889 is 9887021.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 555025 + 652864 = 745^2 + 808^2 .

It is a cyclic number.

It is not a de Polignac number, because 1207889 - 2¹² = 1203793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1207883) 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, 1382 + ... + 2079.

It is an arithmetic number, because the mean of its divisors is an integer number (302925).

2^1207889 is an apocalyptic number.

It is an amenable number.

1207889 is a deficient number, since it is larger than the sum of its proper divisors (3811).

1207889 is an equidigital number, since it uses as much as digits as its factorization.

1207889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 1207889 is about 1099.0400356675. The cubic root of 1207889 is about 106.4982182837.

It can be divided in two parts, 12078 and 89, that added together give a cube (12167 = 23³).

The spelling of 1207889 in words is "one million, two hundred seven thousand, eight hundred eighty-nine".