1139587 has 2 divisors, whose sum is σ = 1139588. Its totient is φ = 1139586.

The previous prime is 1139573. The next prime is 1139623. The reversal of 1139587 is 7859311.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (7859311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1139587 - 2¹⁹ = 615299 is a prime.

It is not a weakly prime, because it can be changed into another prime (1139557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569793 + 569794.

It is an arithmetic number, because the mean of its divisors is an integer number (569794).

2^1139587 is an apocalyptic number.

1139587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139587 is an equidigital number, since it uses as much as digits as its factorization.

1139587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 34.

The square root of 1139587 is about 1067.5144027131. The cubic root of 1139587 is about 104.4517760140.

The spelling of 1139587 in words is "one million, one hundred thirty-nine thousand, five hundred eighty-seven".