1139847 has 8 divisors (see below), whose sum is σ = 1535856. Its totient is φ = 751872.

The previous prime is 1139843. The next prime is 1139849. The reversal of 1139847 is 7489311.

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

It is not a de Polignac number, because 1139847 - 2² = 1139843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1668 + ... + 2249.

It is an arithmetic number, because the mean of its divisors is an integer number (191982).

2^1139847 is an apocalyptic number.

1139847 is a deficient number, since it is larger than the sum of its proper divisors (396009).

1139847 is an equidigital number, since it uses as much as digits as its factorization.

1139847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4017.

The product of its digits is 6048, while the sum is 33.

The square root of 1139847 is about 1067.6361739844. The cubic root of 1139847 is about 104.4597190661.

The spelling of 1139847 in words is "one million, one hundred thirty-nine thousand, eight hundred forty-seven".