1139667 has 4 divisors (see below), whose sum is σ = 1519560. Its totient is φ = 759776.

The previous prime is 1139623. The next prime is 1139669. The reversal of 1139667 is 7669311.

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 1139667 - 2⁷ = 1139539 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1139669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189942 + ... + 189947.

It is an arithmetic number, because the mean of its divisors is an integer number (379890).

2^1139667 is an apocalyptic number.

1139667 is a deficient number, since it is larger than the sum of its proper divisors (379893).

1139667 is an equidigital number, since it uses as much as digits as its factorization.

1139667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379892.

The product of its digits is 6804, while the sum is 33.

The square root of 1139667 is about 1067.5518722760. The cubic root of 1139667 is about 104.4542201587.

The spelling of 1139667 in words is "one million, one hundred thirty-nine thousand, six hundred sixty-seven".