139284851 has 2 divisors, whose sum is σ = 139284852. Its totient is φ = 139284850.

The previous prime is 139284841. The next prime is 139284857. The reversal of 139284851 is 158482931.

It is a strong prime.

It is an emirp because it is prime and its reverse (158482931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139284851 - 2⁶ = 139284787 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 139284799 and 139284808.

It is not a weakly prime, because it can be changed into another prime (139284857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69642425 + 69642426.

It is an arithmetic number, because the mean of its divisors is an integer number (69642426).

Almost surely, 2^139284851 is an apocalyptic number.

139284851 is a deficient number, since it is larger than the sum of its proper divisors (1).

139284851 is an equidigital number, since it uses as much as digits as its factorization.

139284851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 41.

The square root of 139284851 is about 11801.9003130852. The cubic root of 139284851 is about 518.3637559184.

The spelling of 139284851 in words is "one hundred thirty-nine million, two hundred eighty-four thousand, eight hundred fifty-one".