391488 has 28 divisors (see below), whose sum is σ = 1036320. Its totient is φ = 130432.

The previous prime is 391487. The next prime is 391519. The reversal of 391488 is 884193.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828 + ... + 1211.

2³⁹¹⁴⁸⁸ is an apocalyptic number.

It is an amenable number.

391488 is an abundant number, since it is smaller than the sum of its proper divisors (644832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

391488 is a wasteful number, since it uses less digits than its factorization.

391488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054 (or 2044 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 391488 is about 625.6900190989. The cubic root of 391488 is about 73.1542369757.

The spelling of 391488 in words is "three hundred ninety-one thousand, four hundred eighty-eight".