140161393 has 2 divisors, whose sum is σ = 140161394. Its totient is φ = 140161392.

The previous prime is 140161369. The next prime is 140161409. The reversal of 140161393 is 393161041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136819809 + 3341584 = 11697^2 + 1828^2 .

It is a cyclic number.

It is not a de Polignac number, because 140161393 - 2⁵ = 140161361 is a prime.

It is not a weakly prime, because it can be changed into another prime (140161303) 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, 70080696 + 70080697.

It is an arithmetic number, because the mean of its divisors is an integer number (70080697).

Almost surely, 2^140161393 is an apocalyptic number.

It is an amenable number.

140161393 is a deficient number, since it is larger than the sum of its proper divisors (1).

140161393 is an equidigital number, since it uses as much as digits as its factorization.

140161393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 140161393 is about 11838.9777007983. The cubic root of 140161393 is about 519.4488650367.

The spelling of 140161393 in words is "one hundred forty million, one hundred sixty-one thousand, three hundred ninety-three".