1139197 has 2 divisors, whose sum is σ = 1139198. Its totient is φ = 1139196.

The previous prime is 1139191. The next prime is 1139227. The reversal of 1139197 is 7919311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1104601 + 34596 = 1051^2 + 186^2 .

It is an emirp because it is prime and its reverse (7919311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1139197 - 2¹⁵ = 1106429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1139191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569598 + 569599.

It is an arithmetic number, because the mean of its divisors is an integer number (569599).

2^1139197 is an apocalyptic number.

It is an amenable number.

1139197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139197 is an equidigital number, since it uses as much as digits as its factorization.

1139197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1701, while the sum is 31.

The square root of 1139197 is about 1067.3317197573. The cubic root of 1139197 is about 104.4398591703.

The spelling of 1139197 in words is "one million, one hundred thirty-nine thousand, one hundred ninety-seven".