140207447 has 2 divisors, whose sum is σ = 140207448. Its totient is φ = 140207446.

The previous prime is 140207429. The next prime is 140207453. The reversal of 140207447 is 744702041.

It is a strong prime.

It is an emirp because it is prime and its reverse (744702041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140207447 - 2⁸ = 140207191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140207407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70103723 + 70103724.

It is an arithmetic number, because the mean of its divisors is an integer number (70103724).

Almost surely, 2^140207447 is an apocalyptic number.

140207447 is a deficient number, since it is larger than the sum of its proper divisors (1).

140207447 is an equidigital number, since it uses as much as digits as its factorization.

140207447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 140207447 is about 11840.9225569632. The cubic root of 140207447 is about 519.5057520245.

Adding to 140207447 its reverse (744702041), we get a palindrome (884909488).

The spelling of 140207447 in words is "one hundred forty million, two hundred seven thousand, four hundred forty-seven".