139963807 has 2 divisors, whose sum is σ = 139963808. Its totient is φ = 139963806.

The previous prime is 139963801. The next prime is 139963819. The reversal of 139963807 is 708369931.

It is a weak prime.

It is an emirp because it is prime and its reverse (708369931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139963807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139963801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69981903 + 69981904.

It is an arithmetic number, because the mean of its divisors is an integer number (69981904).

Almost surely, 2^139963807 is an apocalyptic number.

139963807 is a deficient number, since it is larger than the sum of its proper divisors (1).

139963807 is an equidigital number, since it uses as much as digits as its factorization.

139963807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 139963807 is about 11830.6300339416. The cubic root of 139963807 is about 519.2046606289.

The spelling of 139963807 in words is "one hundred thirty-nine million, nine hundred sixty-three thousand, eight hundred seven".