1147939 has 8 divisors (see below), whose sum is σ = 1244880. Its totient is φ = 1052256.

The previous prime is 1147931. The next prime is 1147969. The reversal of 1147939 is 9397411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1147939 - 2³ = 1147931 is a prime.

1147939 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1147931) 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 7 ways as a sum of consecutive naturals, for example, 2757 + ... + 3145.

It is an arithmetic number, because the mean of its divisors is an integer number (155610).

2^1147939 is an apocalyptic number.

1147939 is a deficient number, since it is larger than the sum of its proper divisors (96941).

1147939 is a wasteful number, since it uses less digits than its factorization.

1147939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629.

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

The square root of 1147939 is about 1071.4191523396. The cubic root of 1147939 is about 104.7063298275.

The spelling of 1147939 in words is "one million, one hundred forty-seven thousand, nine hundred thirty-nine".