243958 has 16 divisors (see below), whose sum is σ = 430416. Its totient is φ = 102240.

The previous prime is 243953. The next prime is 243973. The reversal of 243958 is 859342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141 + ... + 712.

It is an arithmetic number, because the mean of its divisors is an integer number (26901).

2²⁴³⁹⁵⁸ is an apocalyptic number.

243958 is a deficient number, since it is larger than the sum of its proper divisors (186458).

243958 is a wasteful number, since it uses less digits than its factorization.

243958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879.

The product of its digits is 8640, while the sum is 31.

The square root of 243958 is about 493.9210463222. The cubic root of 243958 is about 62.4844121126.

The spelling of 243958 in words is "two hundred forty-three thousand, nine hundred fifty-eight".