140047447 has 2 divisors, whose sum is σ = 140047448. Its totient is φ = 140047446.

The previous prime is 140047433. The next prime is 140047471. The reversal of 140047447 is 744740041.

140047447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140047447 - 2⁷ = 140047319 is a prime.

It is a super-2 number, since 2×140047447² = 39226574822435618, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140047247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70023723 + 70023724.

It is an arithmetic number, because the mean of its divisors is an integer number (70023724).

Almost surely, 2^140047447 is an apocalyptic number.

140047447 is a deficient number, since it is larger than the sum of its proper divisors (1).

140047447 is an equidigital number, since it uses as much as digits as its factorization.

140047447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12544, while the sum is 31.

The square root of 140047447 is about 11834.1643980469. The cubic root of 140047447 is about 519.3080626710.

Adding to 140047447 its reverse (744740041), we get a palindrome (884787488).

The spelling of 140047447 in words is "one hundred forty million, forty-seven thousand, four hundred forty-seven".