1491147 has 12 divisors (see below), whose sum is σ = 2461680. Its totient is φ = 852048.

The previous prime is 1491109. The next prime is 1491157. The reversal of 1491147 is 7411941.

It is not a de Polignac number, because 1491147 - 2¹¹ = 1489099 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1491147.

It is not an unprimeable number, because it can be changed into a prime (1491157) 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, 11772 + ... + 11897.

It is an arithmetic number, because the mean of its divisors is an integer number (205140).

2^1491147 is an apocalyptic number.

1491147 is a deficient number, since it is larger than the sum of its proper divisors (970533).

1491147 is a wasteful number, since it uses less digits than its factorization.

1491147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23682 (or 23679 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 1491147 is about 1221.1253006960. The cubic root of 1491147 is about 114.2457762980.

It can be divided in two parts, 149 and 1147, that added together give a 4-th power (1296 = 6⁴).

The spelling of 1491147 in words is "one million, four hundred ninety-one thousand, one hundred forty-seven".