391559 has 12 divisors (see below), whose sum is σ = 466488. Its totient is φ = 327600.

The previous prime is 391553. The next prime is 391579. The reversal of 391559 is 955193.

It is not a de Polignac number, because 391559 - 2¹² = 387463 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 (391553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2924 + ... + 3054.

It is an arithmetic number, because the mean of its divisors is an integer number (38874).

2³⁹¹⁵⁵⁹ is an apocalyptic number.

391559 is a deficient number, since it is larger than the sum of its proper divisors (74929).

391559 is a wasteful number, since it uses less digits than its factorization.

391559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 199 counting only the distinct ones).

The product of its digits is 6075, while the sum is 32.

The square root of 391559 is about 625.7467538869. The cubic root of 391559 is about 73.1586591094.

The spelling of 391559 in words is "three hundred ninety-one thousand, five hundred fifty-nine".