9120343621 has 4 divisors (see below), whose sum is σ = 9131426272. Its totient is φ = 9109260972.

The previous prime is 9120343613. The next prime is 9120343643. The reversal of 9120343621 is 1263430219.

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 9120343621 - 2³ = 9120343613 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 (9120343681) 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, 5540091 + ... + 5541736.

It is an arithmetic number, because the mean of its divisors is an integer number (2282856568).

Almost surely, 2^9120343621 is an apocalyptic number.

It is an amenable number.

9120343621 is a deficient number, since it is larger than the sum of its proper divisors (11082651).

9120343621 is a wasteful number, since it uses less digits than its factorization.

9120343621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11082650.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 9120343621 is about 95500.4901610458. The cubic root of 9120343621 is about 2089.3140931975.

The spelling of 9120343621 in words is "nine billion, one hundred twenty million, three hundred forty-three thousand, six hundred twenty-one".