140499859 has 2 divisors, whose sum is σ = 140499860. Its totient is φ = 140499858.

The previous prime is 140499829. The next prime is 140499869. The reversal of 140499859 is 958994041.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140499859 - 2⁷ = 140499731 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140499829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70249929 + 70249930.

It is an arithmetic number, because the mean of its divisors is an integer number (70249930).

Almost surely, 2^140499859 is an apocalyptic number.

140499859 is a deficient number, since it is larger than the sum of its proper divisors (1).

140499859 is an equidigital number, since it uses as much as digits as its factorization.

140499859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 140499859 is about 11853.2636434022. The cubic root of 140499859 is about 519.8666558981.

The spelling of 140499859 in words is "one hundred forty million, four hundred ninety-nine thousand, eight hundred fifty-nine".