1352809 has 12 divisors (see below), whose sum is σ = 1493248. Its totient is φ = 1224000.

The previous prime is 1352807. The next prime is 1352839. The reversal of 1352809 is 9082531.

It is not a de Polignac number, because 1352809 - 2¹ = 1352807 is a prime.

It is a super-3 number, since 3×1352809³ = 7427295558337233387, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1352803) 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, 8884 + ... + 9034.

2^1352809 is an apocalyptic number.

It is an amenable number.

1352809 is a deficient number, since it is larger than the sum of its proper divisors (140439).

1352809 is a wasteful number, since it uses less digits than its factorization.

1352809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1352809 is about 1163.1031768506. The cubic root of 1352809 is about 110.5975469984.

The spelling of 1352809 in words is "one million, three hundred fifty-two thousand, eight hundred nine".