1361089 has 2 divisors, whose sum is σ = 1361090. Its totient is φ = 1361088.

The previous prime is 1361081. The next prime is 1361099. The reversal of 1361089 is 9801631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 960400 + 400689 = 980^2 + 633^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361089 - 2³ = 1361081 is a prime.

1361089 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1361081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680544 + 680545.

It is an arithmetic number, because the mean of its divisors is an integer number (680545).

2^1361089 is an apocalyptic number.

It is an amenable number.

1361089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361089 is an equidigital number, since it uses as much as digits as its factorization.

1361089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1361089 is about 1166.6571904377. The cubic root of 1361089 is about 110.8227292447.

It can be divided in two parts, 136 and 1089, that added together give a triangular number (1225 = T₄₉).

The spelling of 1361089 in words is "one million, three hundred sixty-one thousand, eighty-nine".