1138659 has 8 divisors (see below), whose sum is σ = 1523712. Its totient is φ = 756360.

The previous prime is 1138649. The next prime is 1138667. The reversal of 1138659 is 9568311.

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

It is not a de Polignac number, because 1138659 - 2⁹ = 1138147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1138639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 654 + ... + 1644.

It is an arithmetic number, because the mean of its divisors is an integer number (190464).

2^1138659 is an apocalyptic number.

1138659 is a deficient number, since it is larger than the sum of its proper divisors (385053).

1138659 is an equidigital number, since it uses as much as digits as its factorization.

1138659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377.

The product of its digits is 6480, while the sum is 33.

The square root of 1138659 is about 1067.0796596318. The cubic root of 1138659 is about 104.4234155725.

The spelling of 1138659 in words is "one million, one hundred thirty-eight thousand, six hundred fifty-nine".