391258 has 8 divisors (see below), whose sum is σ = 670752. Its totient is φ = 167676.

The previous prime is 391249. The next prime is 391273. The reversal of 391258 is 852193.

391258 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 15.

It is an unprimeable number.

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, 13960 + ... + 13987.

It is an arithmetic number, because the mean of its divisors is an integer number (83844).

2³⁹¹²⁵⁸ is an apocalyptic number.

391258 is a deficient number, since it is larger than the sum of its proper divisors (279494).

391258 is a wasteful number, since it uses less digits than its factorization.

391258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27956.

The product of its digits is 2160, while the sum is 28.

The square root of 391258 is about 625.5061950133. The cubic root of 391258 is about 73.1399080813.

The spelling of 391258 in words is "three hundred ninety-one thousand, two hundred fifty-eight".