1147399 has 4 divisors (see below), whose sum is σ = 1251720. Its totient is φ = 1043080.

The previous prime is 1147387. The next prime is 1147409. The reversal of 1147399 is 9937411.

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 1147399 - 2⁷ = 1147271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52144 + ... + 52165.

It is an arithmetic number, because the mean of its divisors is an integer number (312930).

2^1147399 is an apocalyptic number.

1147399 is a deficient number, since it is larger than the sum of its proper divisors (104321).

1147399 is a wasteful number, since it uses less digits than its factorization.

1147399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104320.

The product of its digits is 6804, while the sum is 34.

The square root of 1147399 is about 1071.1671204812. The cubic root of 1147399 is about 104.6899090112.

The spelling of 1147399 in words is "one million, one hundred forty-seven thousand, three hundred ninety-nine".