1139867 has 8 divisors (see below), whose sum is σ = 1270800. Its totient is φ = 1016064.

The previous prime is 1139863. The next prime is 1139869. The reversal of 1139867 is 7689311.

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 1139867 - 2² = 1139863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1139861) 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, 1442 + ... + 2087.

It is an arithmetic number, because the mean of its divisors is an integer number (158850).

2^1139867 is an apocalyptic number.

1139867 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1139867 is a deficient number, since it is larger than the sum of its proper divisors (130933).

1139867 is a wasteful number, since it uses less digits than its factorization.

1139867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3565.

The product of its digits is 9072, while the sum is 35.

The square root of 1139867 is about 1067.6455404300. The cubic root of 1139867 is about 104.4603300201.

The spelling of 1139867 in words is "one million, one hundred thirty-nine thousand, eight hundred sixty-seven".