140836169 has 2 divisors, whose sum is σ = 140836170. Its totient is φ = 140836168.

The previous prime is 140836159. The next prime is 140836187. The reversal of 140836169 is 961638041.

140836169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70896400 + 69939769 = 8420^2 + 8363^2 .

It is a cyclic number.

It is not a de Polignac number, because 140836169 - 2⁸ = 140835913 is a prime.

It is a super-2 number, since 2×140836169² = 39669652997193122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140836159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70418084 + 70418085.

It is an arithmetic number, because the mean of its divisors is an integer number (70418085).

Almost surely, 2^140836169 is an apocalyptic number.

It is an amenable number.

140836169 is a deficient number, since it is larger than the sum of its proper divisors (1).

140836169 is an equidigital number, since it uses as much as digits as its factorization.

140836169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 140836169 is about 11867.4415524156. The cubic root of 140836169 is about 520.2811214154.

The spelling of 140836169 in words is "one hundred forty million, eight hundred thirty-six thousand, one hundred sixty-nine".