9429889247 has 2 divisors, whose sum is σ = 9429889248. Its totient is φ = 9429889246.

The previous prime is 9429889223. The next prime is 9429889253. The reversal of 9429889247 is 7429889249.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9429889247 - 2³² = 5134921951 is a prime.

It is a super-2 number, since 2×9429889247² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9429889247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9429882247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4714944623 + 4714944624.

It is an arithmetic number, because the mean of its divisors is an integer number (4714944624).

Almost surely, 2^9429889247 is an apocalyptic number.

9429889247 is a deficient number, since it is larger than the sum of its proper divisors (1).

9429889247 is an equidigital number, since it uses as much as digits as its factorization.

9429889247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20901888, while the sum is 62.

The square root of 9429889247 is about 97107.6168330785. The cubic root of 9429889247 is about 2112.6888033207.

The spelling of 9429889247 in words is "nine billion, four hundred twenty-nine million, eight hundred eighty-nine thousand, two hundred forty-seven".