140249387 has 2 divisors, whose sum is σ = 140249388. Its totient is φ = 140249386.

The previous prime is 140249357. The next prime is 140249399. The reversal of 140249387 is 783942041.

It is a strong prime.

It is an emirp because it is prime and its reverse (783942041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140249387 - 2⁶ = 140249323 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140249387.

It is not a weakly prime, because it can be changed into another prime (140249357) 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, 70124693 + 70124694.

It is an arithmetic number, because the mean of its divisors is an integer number (70124694).

Almost surely, 2^140249387 is an apocalyptic number.

140249387 is a deficient number, since it is larger than the sum of its proper divisors (1).

140249387 is an equidigital number, since it uses as much as digits as its factorization.

140249387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 140249387 is about 11842.6934014184. The cubic root of 140249387 is about 519.5575464657.

The spelling of 140249387 in words is "one hundred forty million, two hundred forty-nine thousand, three hundred eighty-seven".