1149647 has 6 divisors (see below), whose sum is σ = 1191528. Its totient is φ = 1109192.

The previous prime is 1149641. The next prime is 1149661. The reversal of 1149647 is 7469411.

It is not a de Polignac number, because 1149647 - 2¹⁴ = 1133263 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149641) 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 5 ways as a sum of consecutive naturals, for example, 158 + ... + 1524.

It is an arithmetic number, because the mean of its divisors is an integer number (198588).

2^1149647 is an apocalyptic number.

1149647 is a deficient number, since it is larger than the sum of its proper divisors (41881).

1149647 is an equidigital number, since it uses as much as digits as its factorization.

1149647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425 (or 1396 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 1149647 is about 1072.2159297455. The cubic root of 1149647 is about 104.7582343821.

The spelling of 1149647 in words is "one million, one hundred forty-nine thousand, six hundred forty-seven".