140668933 has 2 divisors, whose sum is σ = 140668934. Its totient is φ = 140668932.

The previous prime is 140668907. The next prime is 140668961. The reversal of 140668933 is 339866041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78464164 + 62204769 = 8858^2 + 7887^2 .

It is an emirp because it is prime and its reverse (339866041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140668933 - 2²¹ = 138571781 is a prime.

It is a super-2 number, since 2×140668933² = 39575497422716978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140668903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70334466 + 70334467.

It is an arithmetic number, because the mean of its divisors is an integer number (70334467).

Almost surely, 2^140668933 is an apocalyptic number.

It is an amenable number.

140668933 is a deficient number, since it is larger than the sum of its proper divisors (1).

140668933 is an equidigital number, since it uses as much as digits as its factorization.

140668933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 140668933 is about 11860.3934589035. The cubic root of 140668933 is about 520.0751037972.

The spelling of 140668933 in words is "one hundred forty million, six hundred sixty-eight thousand, nine hundred thirty-three".