9921374241 has 8 divisors (see below), whose sum is σ = 13291194144. Its totient is φ = 6582901920.

The previous prime is 9921374209. The next prime is 9921374249. The reversal of 9921374241 is 1424731299.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9921374241 - 2⁵ = 9921374209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9921374193 and 9921374202.

It is not an unprimeable number, because it can be changed into a prime (9921374249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7836156 + ... + 7837421.

It is an arithmetic number, because the mean of its divisors is an integer number (1661399268).

Almost surely, 2^9921374241 is an apocalyptic number.

It is an amenable number.

9921374241 is a deficient number, since it is larger than the sum of its proper divisors (3369819903).

9921374241 is a wasteful number, since it uses less digits than its factorization.

9921374241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15673791.

The product of its digits is 108864, while the sum is 42.

The square root of 9921374241 is about 99606.0954008338. The cubic root of 9921374241 is about 2148.7733576957.

The spelling of 9921374241 in words is "nine billion, nine hundred twenty-one million, three hundred seventy-four thousand, two hundred forty-one".