139105511 has 2 divisors, whose sum is σ = 139105512. Its totient is φ = 139105510.

The previous prime is 139105493. The next prime is 139105523. The reversal of 139105511 is 115501931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139105511 - 2¹⁴ = 139089127 is a prime.

It is a super-2 number, since 2×139105511² = 38700686381142242, which contains 22 as substring.

It is a Sophie Germain 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 (139105531) 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, 69552755 + 69552756.

It is an arithmetic number, because the mean of its divisors is an integer number (69552756).

Almost surely, 2^139105511 is an apocalyptic number.

139105511 is a deficient number, since it is larger than the sum of its proper divisors (1).

139105511 is an equidigital number, since it uses as much as digits as its factorization.

139105511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 675, while the sum is 26.

The square root of 139105511 is about 11794.2999368339. The cubic root of 139105511 is about 518.1411825778.

The spelling of 139105511 in words is "one hundred thirty-nine million, one hundred five thousand, five hundred eleven".