1329147 has 12 divisors (see below), whose sum is σ = 2003664. Its totient is φ = 847440.

The previous prime is 1329143. The next prime is 1329161. The reversal of 1329147 is 7419231.

It is not a de Polignac number, because 1329147 - 2² = 1329143 is a prime.

1329147 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1329147.

It is not an unprimeable number, because it can be changed into a prime (1329143) 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 11 ways as a sum of consecutive naturals, for example, 3004 + ... + 3417.

It is an arithmetic number, because the mean of its divisors is an integer number (166972).

2^1329147 is an apocalyptic number.

1329147 is a deficient number, since it is larger than the sum of its proper divisors (674517).

1329147 is a wasteful number, since it uses less digits than its factorization.

1329147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6450 (or 6447 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 1329147 is about 1152.8863777493. The cubic root of 1329147 is about 109.9489294608.

Subtracting from 1329147 its product of digits (1512), we obtain a triangular number (1327635 = T₁₆₂₉).

The spelling of 1329147 in words is "one million, three hundred twenty-nine thousand, one hundred forty-seven".