140535893 has 2 divisors, whose sum is σ = 140535894. Its totient is φ = 140535892.

The previous prime is 140535869. The next prime is 140535919. The reversal of 140535893 is 398535041.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70946929 + 69588964 = 8423^2 + 8342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140535893 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140535793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70267946 + 70267947.

It is an arithmetic number, because the mean of its divisors is an integer number (70267947).

Almost surely, 2^140535893 is an apocalyptic number.

It is an amenable number.

140535893 is a deficient number, since it is larger than the sum of its proper divisors (1).

140535893 is an equidigital number, since it uses as much as digits as its factorization.

140535893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 140535893 is about 11854.7835492682. The cubic root of 140535893 is about 519.9110955010.

The spelling of 140535893 in words is "one hundred forty million, five hundred thirty-five thousand, eight hundred ninety-three".