9953894671 has 32 divisors (see below), whose sum is σ = 11807741952. Its totient is φ = 8215084800.

The previous prime is 9953894669. The next prime is 9953894719. The reversal of 9953894671 is 1764983599.

It is a cyclic number.

It is not a de Polignac number, because 9953894671 - 2¹ = 9953894669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9953894651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5525971 + ... + 5527771.

It is an arithmetic number, because the mean of its divisors is an integer number (368991936).

Almost surely, 2^9953894671 is an apocalyptic number.

9953894671 is a deficient number, since it is larger than the sum of its proper divisors (1853847281).

9953894671 is a wasteful number, since it uses less digits than its factorization.

9953894671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119.

The product of its digits is 14696640, while the sum is 61.

The square root of 9953894671 is about 99769.2070280204. The cubic root of 9953894671 is about 2151.1185577462.

The spelling of 9953894671 in words is "nine billion, nine hundred fifty-three million, eight hundred ninety-four thousand, six hundred seventy-one".