140044613 has 2 divisors, whose sum is σ = 140044614. Its totient is φ = 140044612.

The previous prime is 140044591. The next prime is 140044717. The reversal of 140044613 is 316440041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122921569 + 17123044 = 11087^2 + 4138^2 .

It is a cyclic number.

It is not a de Polignac number, because 140044613 - 2⁶ = 140044549 is a prime.

It is a super-2 number, since 2×140044613² = 39224987260639538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140044213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70022306 + 70022307.

It is an arithmetic number, because the mean of its divisors is an integer number (70022307).

Almost surely, 2^140044613 is an apocalyptic number.

It is an amenable number.

140044613 is a deficient number, since it is larger than the sum of its proper divisors (1).

140044613 is an equidigital number, since it uses as much as digits as its factorization.

140044613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 140044613 is about 11834.0446593715. The cubic root of 140044613 is about 519.3045597416.

Adding to 140044613 its reverse (316440041), we get a palindrome (456484654).

The spelling of 140044613 in words is "one hundred forty million, forty-four thousand, six hundred thirteen".