355399 has 4 divisors (see below), whose sum is σ = 387720. Its totient is φ = 323080.

The previous prime is 355379. The next prime is 355417. The reversal of 355399 is 993553.

It is a happy number.

355399 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 355399 - 2¹⁵ = 322631 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 (355339) 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, 16144 + ... + 16165.

It is an arithmetic number, because the mean of its divisors is an integer number (96930).

2³⁵⁵³⁹⁹ is an apocalyptic number.

355399 is a deficient number, since it is larger than the sum of its proper divisors (32321).

355399 is a wasteful number, since it uses less digits than its factorization.

355399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32320.

The product of its digits is 18225, while the sum is 34.

The square root of 355399 is about 596.1535037220. The cubic root of 355399 is about 70.8335052668.

The spelling of 355399 in words is "three hundred fifty-five thousand, three hundred ninety-nine".