1491447 has 8 divisors (see below), whose sum is σ = 2007280. Its totient is φ = 984960.

The previous prime is 1491439. The next prime is 1491449. The reversal of 1491447 is 7441941.

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

It is not a de Polignac number, because 1491447 - 2³ = 1491439 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 (1491449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1954 + ... + 2607.

It is an arithmetic number, because the mean of its divisors is an integer number (250910).

2^1491447 is an apocalyptic number.

1491447 is a deficient number, since it is larger than the sum of its proper divisors (515833).

1491447 is a wasteful number, since it uses less digits than its factorization.

1491447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673.

The product of its digits is 4032, while the sum is 30.

The square root of 1491447 is about 1221.2481320354. The cubic root of 1491447 is about 114.2534373881.

It can be divided in two parts, 149 and 1447, that added together give a triangular number (1596 = T₅₆).

The spelling of 1491447 in words is "one million, four hundred ninety-one thousand, four hundred forty-seven".