350409 has 4 divisors (see below), whose sum is σ = 467216. Its totient is φ = 233604.

The previous prime is 350381. The next prime is 350411. The reversal of 350409 is 904053.

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 not a de Polignac number, because 350409 - 2⁵ = 350377 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (350429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58399 + ... + 58404.

It is an arithmetic number, because the mean of its divisors is an integer number (116804).

2³⁵⁰⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

350409 is a deficient number, since it is larger than the sum of its proper divisors (116807).

350409 is a wasteful number, since it uses less digits than its factorization.

350409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116806.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 350409 is about 591.9535454746. The cubic root of 350409 is about 70.5004275413.

The spelling of 350409 in words is "three hundred fifty thousand, four hundred nine".