9870475249 has 2 divisors, whose sum is σ = 9870475250. Its totient is φ = 9870475248.

The previous prime is 9870475157. The next prime is 9870475253. The reversal of 9870475249 is 9425740789.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9866846224 + 3629025 = 99332^2 + 1905^2 .

It is a cyclic number.

It is not a de Polignac number, because 9870475249 - 2²⁹ = 9333604337 is a prime.

It is a super-2 number, since 2×9870475249² (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 9870475249.

It is not a weakly prime, because it can be changed into another prime (9870475649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4935237624 + 4935237625.

It is an arithmetic number, because the mean of its divisors is an integer number (4935237625).

Almost surely, 2^9870475249 is an apocalyptic number.

It is an amenable number.

9870475249 is a deficient number, since it is larger than the sum of its proper divisors (1).

9870475249 is an equidigital number, since it uses as much as digits as its factorization.

9870475249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The square root of 9870475249 is about 99350.2654702040. The cubic root of 9870475249 is about 2145.0924843890.

The spelling of 9870475249 in words is "nine billion, eight hundred seventy million, four hundred seventy-five thousand, two hundred forty-nine".