140335439 has 2 divisors, whose sum is σ = 140335440. Its totient is φ = 140335438.

The previous prime is 140335423. The next prime is 140335451. The reversal of 140335439 is 934533041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140335439 - 2⁴ = 140335423 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 (140335469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70167719 + 70167720.

It is an arithmetic number, because the mean of its divisors is an integer number (70167720).

Almost surely, 2^140335439 is an apocalyptic number.

140335439 is a deficient number, since it is larger than the sum of its proper divisors (1).

140335439 is an equidigital number, since it uses as much as digits as its factorization.

140335439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 140335439 is about 11846.3259705277. The cubic root of 140335439 is about 519.6637853737.

The spelling of 140335439 in words is "one hundred forty million, three hundred thirty-five thousand, four hundred thirty-nine".