9421934621 has 4 divisors (see below), whose sum is σ = 10278474144. Its totient is φ = 8565395100.

The previous prime is 9421934617. The next prime is 9421934623. The reversal of 9421934621 is 1264391249.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1264391249 = 11 ⋅114944659.

It is a cyclic number.

It is not a de Polignac number, because 9421934621 - 2² = 9421934617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9421934623) 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, 428269745 + ... + 428269766.

It is an arithmetic number, because the mean of its divisors is an integer number (2569618536).

Almost surely, 2^9421934621 is an apocalyptic number.

It is an amenable number.

9421934621 is a deficient number, since it is larger than the sum of its proper divisors (856539523).

9421934621 is a wasteful number, since it uses less digits than its factorization.

9421934621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856539522.

The product of its digits is 93312, while the sum is 41.

The square root of 9421934621 is about 97066.6504057908. The cubic root of 9421934621 is about 2112.0945801171.

The spelling of 9421934621 in words is "nine billion, four hundred twenty-one million, nine hundred thirty-four thousand, six hundred twenty-one".