9875295921 has 4 divisors (see below), whose sum is σ = 13167061232. Its totient is φ = 6583530612.

The previous prime is 9875295919. The next prime is 9875295931. The reversal of 9875295921 is 1295925789.

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 not a de Polignac number, because 9875295921 - 2¹ = 9875295919 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9875295931) 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, 1645882651 + ... + 1645882656.

It is an arithmetic number, because the mean of its divisors is an integer number (3291765308).

Almost surely, 2^9875295921 is an apocalyptic number.

It is an amenable number.

9875295921 is a deficient number, since it is larger than the sum of its proper divisors (3291765311).

9875295921 is a wasteful number, since it uses less digits than its factorization.

9875295921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291765310.

The product of its digits is 4082400, while the sum is 57.

The square root of 9875295921 is about 99374.5235007444. The cubic root of 9875295921 is about 2145.4416436752.

The spelling of 9875295921 in words is "nine billion, eight hundred seventy-five million, two hundred ninety-five thousand, nine hundred twenty-one".