139826807 has 2 divisors, whose sum is σ = 139826808. Its totient is φ = 139826806.

The previous prime is 139826801. The next prime is 139826809. The reversal of 139826807 is 708628931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139826807 - 2²⁶ = 72717943 is a prime.

Together with 139826809, 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 (139826801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69913403 + 69913404.

It is an arithmetic number, because the mean of its divisors is an integer number (69913404).

Almost surely, 2^139826807 is an apocalyptic number.

139826807 is a deficient number, since it is larger than the sum of its proper divisors (1).

139826807 is an equidigital number, since it uses as much as digits as its factorization.

139826807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 139826807 is about 11824.8385612659. The cubic root of 139826807 is about 519.0352019168.

The spelling of 139826807 in words is "one hundred thirty-nine million, eight hundred twenty-six thousand, eight hundred seven".