1353709 has 4 divisors (see below), whose sum is σ = 1547104. Its totient is φ = 1160316.

The previous prime is 1353707. The next prime is 1353713. The reversal of 1353709 is 9073531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1353709 - 2¹ = 1353707 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1353701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96687 + ... + 96700.

It is an arithmetic number, because the mean of its divisors is an integer number (386776).

2^1353709 is an apocalyptic number.

It is an amenable number.

1353709 is a deficient number, since it is larger than the sum of its proper divisors (193395).

1353709 is an equidigital number, since it uses as much as digits as its factorization.

1353709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193394.

The product of its (nonzero) digits is 2835, while the sum is 28.

The square root of 1353709 is about 1163.4900085519. The cubic root of 1353709 is about 110.6220677614.

It can be divided in two parts, 135 and 3709, that added together give a square (3844 = 62²).

The spelling of 1353709 in words is "one million, three hundred fifty-three thousand, seven hundred nine".