391324 has 18 divisors (see below), whose sum is σ = 725424. Its totient is φ = 184680.

The previous prime is 391301. The next prime is 391331. The reversal of 391324 is 423193.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 391295 and 391304.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 1309 + ... + 1579.

2³⁹¹³²⁴ is an apocalyptic number.

It is an amenable number.

391324 is a deficient number, since it is larger than the sum of its proper divisors (334100).

391324 is a wasteful number, since it uses less digits than its factorization.

391324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 292 counting only the distinct ones).

The product of its digits is 648, while the sum is 22.

The square root of 391324 is about 625.5589500599. The cubic root of 391324 is about 73.1440204254.

The spelling of 391324 in words is "three hundred ninety-one thousand, three hundred twenty-four".