342989 has 2 divisors, whose sum is σ = 342990. Its totient is φ = 342988.

The previous prime is 342971. The next prime is 343019. The reversal of 342989 is 989243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209764 + 133225 = 458^2 + 365^2 .

It is a cyclic number.

It is not a de Polignac number, because 342989 - 2⁸ = 342733 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 3⁷ + 4⁹ + 9⁴ + 2¹⁵ + 8⁵ + 9⁴ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171494 + 171495.

It is an arithmetic number, because the mean of its divisors is an integer number (171495).

2³⁴²⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

342989 is a deficient number, since it is larger than the sum of its proper divisors (1).

342989 is an equidigital number, since it uses as much as digits as its factorization.

342989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 35.

The square root of 342989 is about 585.6526274166. The cubic root of 342989 is about 69.9992516927. Note that the first 3 decimals are identical.

It can be divided in two parts, 342 and 989, that added together give a palindrome (1331).

The spelling of 342989 in words is "three hundred forty-two thousand, nine hundred eighty-nine".