1088309 has 2 divisors, whose sum is σ = 1088310. Its totient is φ = 1088308.

The previous prime is 1088293. The next prime is 1088371. The reversal of 1088309 is 9038801.

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., 605284 + 483025 = 778^2 + 695^2 .

It is a cyclic number.

It is not a de Polignac number, because 1088309 - 2⁴ = 1088293 is a prime.

It is a super-3 number, since 3×1088309³ = 3867033343102462887, which contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1088389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544154 + 544155.

It is an arithmetic number, because the mean of its divisors is an integer number (544155).

2^1088309 is an apocalyptic number.

It is an amenable number.

1088309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1088309 is an equidigital number, since it uses as much as digits as its factorization.

1088309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1088309 is about 1043.2204944306. The cubic root of 1088309 is about 102.8609995431.

The spelling of 1088309 in words is "one million, eighty-eight thousand, three hundred nine".