345949 has 4 divisors (see below), whose sum is σ = 347164. Its totient is φ = 344736.

The previous prime is 345937. The next prime is 345953. The reversal of 345949 is 949543.

345949 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 949543 = 7 ⋅135649.

It can be written as a sum of positive squares in 2 ways, for example, as 260100 + 85849 = 510^2 + 293^2 .

It is a cyclic number.

It is not a de Polignac number, because 345949 - 2¹¹ = 343901 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 (345979) 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, 79 + ... + 835.

It is an arithmetic number, because the mean of its divisors is an integer number (86791).

2³⁴⁵⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

345949 is a deficient number, since it is larger than the sum of its proper divisors (1215).

345949 is an equidigital number, since it uses as much as digits as its factorization.

345949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1214.

The product of its digits is 19440, while the sum is 34.

The square root of 345949 is about 588.1742938960. The cubic root of 345949 is about 70.2000400429.

The spelling of 345949 in words is "three hundred forty-five thousand, nine hundred forty-nine".