1391488 has 32 divisors (see below), whose sum is σ = 3170160. Its totient is φ = 595968.

The previous prime is 1391483. The next prime is 1391519. The reversal of 1391488 is 8841931.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1391483) 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, 120 + ... + 1672.

2^1391488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1391488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1585080).

1391488 is an abundant number, since it is smaller than the sum of its proper divisors (1778672).

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

1391488 is an equidigital number, since it uses as much as digits as its factorization.

1391488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574 (or 1562 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 1391488 is about 1179.6134960232. The cubic root of 1391488 is about 111.6417122030.

The spelling of 1391488 in words is "one million, three hundred ninety-one thousand, four hundred eighty-eight".