139106169 has 12 divisors (see below), whose sum is σ = 204225892. Its totient is φ = 91216800.

The previous prime is 139106167. The next prime is 139106171. The reversal of 139106169 is 961601931.

139106169 is a `hidden beast` number, since 1 + 39 + 1 + 0 + 616 + 9 = 666.

139106169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (139106167) and next prime (139106171).

It can be written as a sum of positive squares in 2 ways, for example, as 15896169 + 123210000 = 3987^2 + 11100^2 .

It is not a de Polignac number, because 139106169 - 2¹ = 139106167 is a prime.

It is a super-2 number, since 2×139106169² = 38701052507713122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139106167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126142 + ... + 127239.

Almost surely, 2^139106169 is an apocalyptic number.

It is an amenable number.

139106169 is a deficient number, since it is larger than the sum of its proper divisors (65119723).

139106169 is a wasteful number, since it uses less digits than its factorization.

139106169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253448 (or 253445 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 139106169 is about 11794.3278316316. The cubic root of 139106169 is about 518.1419995509.

The spelling of 139106169 in words is "one hundred thirty-nine million, one hundred six thousand, one hundred sixty-nine".