140223947 has 2 divisors, whose sum is σ = 140223948. Its totient is φ = 140223946.

The previous prime is 140223931. The next prime is 140224003. The reversal of 140223947 is 749322041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140223947 - 2⁴ = 140223931 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140223907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70111973 + 70111974.

It is an arithmetic number, because the mean of its divisors is an integer number (70111974).

Almost surely, 2^140223947 is an apocalyptic number.

140223947 is a deficient number, since it is larger than the sum of its proper divisors (1).

140223947 is an equidigital number, since it uses as much as digits as its factorization.

140223947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 140223947 is about 11841.6192727177. The cubic root of 140223947 is about 519.5261301829.

Adding to 140223947 its reverse (749322041), we get a palindrome (889545988).

The spelling of 140223947 in words is "one hundred forty million, two hundred twenty-three thousand, nine hundred forty-seven".