1149947 has 4 divisors (see below), whose sum is σ = 1158360. Its totient is φ = 1141536.

The previous prime is 1149943. The next prime is 1149971. The reversal of 1149947 is 7499411.

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 1149947 - 2² = 1149943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1149943) 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 3 ways as a sum of consecutive naturals, for example, 3998 + ... + 4275.

It is an arithmetic number, because the mean of its divisors is an integer number (289590).

2^1149947 is an apocalyptic number.

1149947 is a deficient number, since it is larger than the sum of its proper divisors (8413).

1149947 is an equidigital number, since it uses as much as digits as its factorization.

1149947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8412.

The product of its digits is 9072, while the sum is 35.

The square root of 1149947 is about 1072.3558178142. The cubic root of 1149947 is about 104.7673457983.

The spelling of 1149947 in words is "one million, one hundred forty-nine thousand, nine hundred forty-seven".