9429889249 has 12 divisors (see below), whose sum is σ = 10368938020. Its totient is φ = 8569440000.

The previous prime is 9429889247. The next prime is 9429889253.

9429889249 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 3178140625 + 6251748624 = 56375^2 + 79068^2 .

It is not a de Polignac number, because 9429889249 - 2¹ = 9429889247 is a prime.

It is a super-2 number, since 2×9429889249² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9429889247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 350137 + ... + 376105.

Almost surely, 2^9429889249 is an apocalyptic number.

It is an amenable number.

9429889249 is a deficient number, since it is larger than the sum of its proper divisors (939048771).

9429889249 is a wasteful number, since it uses less digits than its factorization.

9429889249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28992 (or 28981 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 64.

The square root of 9429889249 is about 97107.6168433764. The cubic root of 9429889249 is about 2112.6888034701.

The spelling of 9429889249 in words is "nine billion, four hundred twenty-nine million, eight hundred eighty-nine thousand, two hundred forty-nine".