1009147 has 4 divisors (see below), whose sum is σ = 1062280. Its totient is φ = 956016.

The previous prime is 1009139. The next prime is 1009153. The reversal of 1009147 is 7419001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7419001 = 353 ⋅21017.

It is a cyclic number.

It is not a de Polignac number, because 1009147 - 2³ = 1009139 is a prime.

It is a Duffinian number.

1009147 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1009157) 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, 26538 + ... + 26575.

It is an arithmetic number, because the mean of its divisors is an integer number (265570).

2^1009147 is an apocalyptic number.

1009147 is a deficient number, since it is larger than the sum of its proper divisors (53133).

1009147 is an equidigital number, since it uses as much as digits as its factorization.

1009147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53132.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 1009147 is about 1004.5630891089. The cubic root of 1009147 is about 100.3039750554.

It can be divided in two parts, 1009 and 147, that added together give a square (1156 = 34²).

The spelling of 1009147 in words is "one million, nine thousand, one hundred forty-seven".