9948950857 has 4 divisors (see below), whose sum is σ = 9949161600. Its totient is φ = 9948740116.

The previous prime is 9948950833. The next prime is 9948950887. The reversal of 9948950857 is 7580598499.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9948950857 - 2²⁷ = 9814733129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9948950827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1728 + ... + 141070.

It is an arithmetic number, because the mean of its divisors is an integer number (2487290400).

Almost surely, 2^9948950857 is an apocalyptic number.

It is an amenable number.

9948950857 is a deficient number, since it is larger than the sum of its proper divisors (210743).

9948950857 is a wasteful number, since it uses less digits than its factorization.

9948950857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210742.

The product of its (nonzero) digits is 32659200, while the sum is 64.

The square root of 9948950857 is about 99744.4276989948. The cubic root of 9948950857 is about 2150.7623658054.

The spelling of 9948950857 in words is "nine billion, nine hundred forty-eight million, nine hundred fifty thousand, eight hundred fifty-seven".