1139806247 has 2 divisors, whose sum is σ = 1139806248. Its totient is φ = 1139806246.

The previous prime is 1139806223. The next prime is 1139806277. The reversal of 1139806247 is 7426089311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1139806247 - 2²⁰ = 1138757671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1139806207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569903123 + 569903124.

It is an arithmetic number, because the mean of its divisors is an integer number (569903124).

Almost surely, 2^1139806247 is an apocalyptic number.

1139806247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139806247 is an equidigital number, since it uses as much as digits as its factorization.

1139806247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 1139806247 is about 33761.0166760422. The cubic root of 1139806247 is about 1044.5847413362.

The spelling of 1139806247 in words is "one billion, one hundred thirty-nine million, eight hundred six thousand, two hundred forty-seven".