140817793 has 2 divisors, whose sum is σ = 140817794. Its totient is φ = 140817792.

The previous prime is 140817763. The next prime is 140817869. The reversal of 140817793 is 397718041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105021504 + 35796289 = 10248^2 + 5983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140817793 is a prime.

It is not a weakly prime, because it can be changed into another prime (140817763) 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, 70408896 + 70408897.

It is an arithmetic number, because the mean of its divisors is an integer number (70408897).

Almost surely, 2^140817793 is an apocalyptic number.

It is an amenable number.

140817793 is a deficient number, since it is larger than the sum of its proper divisors (1).

140817793 is an equidigital number, since it uses as much as digits as its factorization.

140817793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 140817793 is about 11866.6673080524. The cubic root of 140817793 is about 520.2584920444.

The spelling of 140817793 in words is "one hundred forty million, eight hundred seventeen thousand, seven hundred ninety-three".