709921343447 has 2 divisors, whose sum is σ = 709921343448. Its totient is φ = 709921343446.

The previous prime is 709921343423. The next prime is 709921343473. The reversal of 709921343447 is 744343129907.

It is a happy number.

709921343447 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 709921343447 - 2¹⁶ = 709921277911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (709921346447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354960671723 + 354960671724.

It is an arithmetic number, because the mean of its divisors is an integer number (354960671724).

Almost surely, 2^709921343447 is an apocalyptic number.

709921343447 is a deficient number, since it is larger than the sum of its proper divisors (1).

709921343447 is an equidigital number, since it uses as much as digits as its factorization.

709921343447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4572288, while the sum is 53.

The spelling of 709921343447 in words is "seven hundred nine billion, nine hundred twenty-one million, three hundred forty-three thousand, four hundred forty-seven".