346409 has 16 divisors (see below), whose sum is σ = 435456. Its totient is φ = 268800.

The previous prime is 346399. The next prime is 346417. The reversal of 346409 is 904643.

It is not a de Polignac number, because 346409 - 2⁴ = 346393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4844 + ... + 4914.

It is an arithmetic number, because the mean of its divisors is an integer number (27216).

2³⁴⁶⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

346409 is a deficient number, since it is larger than the sum of its proper divisors (89047).

346409 is a wasteful number, since it uses less digits than its factorization.

346409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 346409 is about 588.5652045441. The cubic root of 346409 is about 70.2311406930.

The spelling of 346409 in words is "three hundred forty-six thousand, four hundred nine".