1247963 has 4 divisors (see below), whose sum is σ = 1263840. Its totient is φ = 1232088.

The previous prime is 1247959. The next prime is 1247969. The reversal of 1247963 is 3697421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1247963 - 2² = 1247959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1247969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7820 + ... + 7977.

It is an arithmetic number, because the mean of its divisors is an integer number (315960).

2^1247963 is an apocalyptic number.

1247963 is a deficient number, since it is larger than the sum of its proper divisors (15877).

1247963 is an equidigital number, since it uses as much as digits as its factorization.

1247963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15876.

The product of its digits is 9072, while the sum is 32.

The square root of 1247963 is about 1117.1226432223. The cubic root of 1247963 is about 107.6631882416.

The spelling of 1247963 in words is "one million, two hundred forty-seven thousand, nine hundred sixty-three".