1139894207 has 2 divisors, whose sum is σ = 1139894208. Its totient is φ = 1139894206.

The previous prime is 1139894179. The next prime is 1139894209. The reversal of 1139894207 is 7024989311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1139894207 - 2¹⁶ = 1139828671 is a prime.

Together with 1139894209, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1139894209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569947103 + 569947104.

It is an arithmetic number, because the mean of its divisors is an integer number (569947104).

Almost surely, 2^1139894207 is an apocalyptic number.

1139894207 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139894207 is an equidigital number, since it uses as much as digits as its factorization.

1139894207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 1139894207 is about 33762.3193367991. The cubic root of 1139894207 is about 1044.6116111984.

The spelling of 1139894207 in words is "one billion, one hundred thirty-nine million, eight hundred ninety-four thousand, two hundred seven".