140193539 has 2 divisors, whose sum is σ = 140193540. Its totient is φ = 140193538.

The previous prime is 140193523. The next prime is 140193541. The reversal of 140193539 is 935391041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140193539 - 2⁴ = 140193523 is a prime.

Together with 140193541, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 140193499 and 140193508.

It is not a weakly prime, because it can be changed into another prime (140193839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70096769 + 70096770.

It is an arithmetic number, because the mean of its divisors is an integer number (70096770).

Almost surely, 2^140193539 is an apocalyptic number.

140193539 is a deficient number, since it is larger than the sum of its proper divisors (1).

140193539 is an equidigital number, since it uses as much as digits as its factorization.

140193539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 140193539 is about 11840.3352570778. The cubic root of 140193539 is about 519.4885738478.

The spelling of 140193539 in words is "one hundred forty million, one hundred ninety-three thousand, five hundred thirty-nine".