1103947 has 4 divisors (see below), whose sum is σ = 1188880. Its totient is φ = 1019016.

The previous prime is 1103933. The next prime is 1103981. The reversal of 1103947 is 7493011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7493011 = 19 ⋅394369.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1103947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1103987) 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, 42447 + ... + 42472.

It is an arithmetic number, because the mean of its divisors is an integer number (297220).

2^1103947 is an apocalyptic number.

1103947 is a deficient number, since it is larger than the sum of its proper divisors (84933).

1103947 is an equidigital number, since it uses as much as digits as its factorization.

1103947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84932.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 1103947 is about 1050.6888216784. The cubic root of 1103947 is about 103.3513311234.

Adding to 1103947 its reverse (7493011), we get a palindrome (8596958).

The spelling of 1103947 in words is "one million, one hundred three thousand, nine hundred forty-seven".