140434289 has 2 divisors, whose sum is σ = 140434290. Its totient is φ = 140434288.

The previous prime is 140434279. The next prime is 140434319. The reversal of 140434289 is 982434041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135326689 + 5107600 = 11633^2 + 2260^2 .

It is an emirp because it is prime and its reverse (982434041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140434289 - 2⁸ = 140434033 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140434279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70217144 + 70217145.

It is an arithmetic number, because the mean of its divisors is an integer number (70217145).

Almost surely, 2^140434289 is an apocalyptic number.

It is an amenable number.

140434289 is a deficient number, since it is larger than the sum of its proper divisors (1).

140434289 is an equidigital number, since it uses as much as digits as its factorization.

140434289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 140434289 is about 11850.4974157206. The cubic root of 140434289 is about 519.7857709752.

The spelling of 140434289 in words is "one hundred forty million, four hundred thirty-four thousand, two hundred eighty-nine".