1139839 has 8 divisors (see below), whose sum is σ = 1193472. Its totient is φ = 1087320.

The previous prime is 1139819. The next prime is 1139843. The reversal of 1139839 is 9389311.

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 1139839 - 2⁵ = 1139807 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 (1139819) 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, 2352 + ... + 2794.

It is an arithmetic number, because the mean of its divisors is an integer number (149184).

2^1139839 is an apocalyptic number.

1139839 is a deficient number, since it is larger than the sum of its proper divisors (53633).

1139839 is an equidigital number, since it uses as much as digits as its factorization.

1139839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557.

The product of its digits is 5832, while the sum is 34.

The square root of 1139839 is about 1067.6324273831. The cubic root of 1139839 is about 104.4594746825.

The spelling of 1139839 in words is "one million, one hundred thirty-nine thousand, eight hundred thirty-nine".