1139081 has 2 divisors, whose sum is σ = 1139082. Its totient is φ = 1139080.

The previous prime is 1139059. The next prime is 1139087. The reversal of 1139081 is 1809311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 846400 + 292681 = 920^2 + 541^2 .

It is a cyclic number.

It is not a de Polignac number, because 1139081 - 2¹⁰ = 1138057 is a prime.

It is a super-2 number, since 2×1139081² = 2595011049122, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (1139087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569540 + 569541.

It is an arithmetic number, because the mean of its divisors is an integer number (569541).

2^1139081 is an apocalyptic number.

It is an amenable number.

1139081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139081 is an equidigital number, since it uses as much as digits as its factorization.

1139081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 1139081 is about 1067.2773772549. The cubic root of 1139081 is about 104.4363141484.

The spelling of 1139081 in words is "one million, one hundred thirty-nine thousand, eighty-one".