140263579 has 2 divisors, whose sum is σ = 140263580. Its totient is φ = 140263578.

The previous prime is 140263577. The next prime is 140263601. The reversal of 140263579 is 975362041.

It is a weak prime.

It is an emirp because it is prime and its reverse (975362041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140263579 - 2¹ = 140263577 is a prime.

Together with 140263577, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140263577) 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, 70131789 + 70131790.

It is an arithmetic number, because the mean of its divisors is an integer number (70131790).

Almost surely, 2^140263579 is an apocalyptic number.

140263579 is a deficient number, since it is larger than the sum of its proper divisors (1).

140263579 is an equidigital number, since it uses as much as digits as its factorization.

140263579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 140263579 is about 11843.2925742802. The cubic root of 140263579 is about 519.5750707539.

The spelling of 140263579 in words is "one hundred forty million, two hundred sixty-three thousand, five hundred seventy-nine".