140399993 has 2 divisors, whose sum is σ = 140399994. Its totient is φ = 140399992.

The previous prime is 140399989. The next prime is 140400019. The reversal of 140399993 is 399993041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96668224 + 43731769 = 9832^2 + 6613^2 .

It is a cyclic number.

It is not a de Polignac number, because 140399993 - 2² = 140399989 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140399953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70199996 + 70199997.

It is an arithmetic number, because the mean of its divisors is an integer number (70199997).

Almost surely, 2^140399993 is an apocalyptic number.

It is an amenable number.

140399993 is a deficient number, since it is larger than the sum of its proper divisors (1).

140399993 is an equidigital number, since it uses as much as digits as its factorization.

140399993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 236196, while the sum is 47.

The square root of 140399993 is about 11849.0502994966. The cubic root of 140399993 is about 519.7434545668.

The spelling of 140399993 in words is "one hundred forty million, three hundred ninety-nine thousand, nine hundred ninety-three".