353909 has 4 divisors (see below), whose sum is σ = 355104. Its totient is φ = 352716.

The previous prime is 353897. The next prime is 353911. The reversal of 353909 is 909353.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 909353 = 29 ⋅31357.

It is a cyclic number.

It is not a de Polignac number, because 353909 - 2⁸ = 353653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 353909.

It is not an unprimeable number, because it can be changed into a prime (353929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224 + ... + 870.

It is an arithmetic number, because the mean of its divisors is an integer number (88776).

2³⁵³⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

353909 is a deficient number, since it is larger than the sum of its proper divisors (1195).

353909 is an equidigital number, since it uses as much as digits as its factorization.

353909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194.

The product of its (nonzero) digits is 3645, while the sum is 29.

The square root of 353909 is about 594.9025130221. The cubic root of 353909 is about 70.7343774685.

The spelling of 353909 in words is "three hundred fifty-three thousand, nine hundred nine".