140694539 has 2 divisors, whose sum is σ = 140694540. Its totient is φ = 140694538.

The previous prime is 140694469. The next prime is 140694551. The reversal of 140694539 is 935496041.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140694539 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 140694496 and 140694505.

It is not a weakly prime, because it can be changed into another prime (140694559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70347269 + 70347270.

It is an arithmetic number, because the mean of its divisors is an integer number (70347270).

Almost surely, 2^140694539 is an apocalyptic number.

140694539 is a deficient number, since it is larger than the sum of its proper divisors (1).

140694539 is an equidigital number, since it uses as much as digits as its factorization.

140694539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 140694539 is about 11861.4728849330. The cubic root of 140694539 is about 520.1066583484.

The spelling of 140694539 in words is "one hundred forty million, six hundred ninety-four thousand, five hundred thirty-nine".