9873617257 has 12 divisors (see below), whose sum is σ = 11556109776. Its totient is φ = 8411172840.

The previous prime is 9873617251. The next prime is 9873617297. The reversal of 9873617257 is 7527163789.

It is a happy number.

It is not a de Polignac number, because 9873617257 - 2³ = 9873617249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9873617198 and 9873617207.

It is not an unprimeable number, because it can be changed into a prime (9873617251) 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, 610119 + ... + 626092.

It is an arithmetic number, because the mean of its divisors is an integer number (963009148).

Almost surely, 2^9873617257 is an apocalyptic number.

It is an amenable number.

9873617257 is a deficient number, since it is larger than the sum of its proper divisors (1682492519).

9873617257 is a wasteful number, since it uses less digits than its factorization.

9873617257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236388 (or 1236381 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 55.

The square root of 9873617257 is about 99366.0769931067. The cubic root of 9873617257 is about 2145.3200716310.

The spelling of 9873617257 in words is "nine billion, eight hundred seventy-three million, six hundred seventeen thousand, two hundred fifty-seven".