139379087 has 2 divisors, whose sum is σ = 139379088. Its totient is φ = 139379086.

The previous prime is 139379081. The next prime is 139379099. The reversal of 139379087 is 780973931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139379087 - 2¹⁴ = 139362703 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139379081) 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, 69689543 + 69689544.

It is an arithmetic number, because the mean of its divisors is an integer number (69689544).

Almost surely, 2^139379087 is an apocalyptic number.

139379087 is a deficient number, since it is larger than the sum of its proper divisors (1).

139379087 is an equidigital number, since it uses as much as digits as its factorization.

139379087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 139379087 is about 11805.8920459235. The cubic root of 139379087 is about 518.4806327460.

The spelling of 139379087 in words is "one hundred thirty-nine million, three hundred seventy-nine thousand, eighty-seven".