1139993 has 2 divisors, whose sum is σ = 1139994. Its totient is φ = 1139992.
The previous prime is 1139989. The next prime is 1140091. The reversal of 1139993 is 3999311.
It is a happy number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 1054729 + 85264 = 1027^2 + 292^2 .
It is an emirp because it is prime and its reverse (3999311) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1139993 - 22 = 1139989 is a prime.
It is not a weakly prime, because it can be changed into another prime (1139293) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569996 + 569997.
It is an arithmetic number, because the mean of its divisors is an integer number (569997).
21139993 is an apocalyptic number.
It is an amenable number.
1139993 is a deficient number, since it is larger than the sum of its proper divisors (1).
1139993 is an equidigital number, since it uses as much as digits as its factorization.
1139993 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 6561, while the sum is 35.
The square root of 1139993 is about 1067.7045471478. The cubic root of 1139993 is about 104.4641788658.
It can be divided in two parts, 11 and 39993, that added together give a palindrome (40004).
The spelling of 1139993 in words is "one million, one hundred thirty-nine thousand, nine hundred ninety-three".
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