9274637721 has 4 divisors (see below), whose sum is σ = 12366183632. Its totient is φ = 6183091812.

The previous prime is 9274637717. The next prime is 9274637731. The reversal of 9274637721 is 1277364729.

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 9274637721 - 2² = 9274637717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9274637731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1545772951 + ... + 1545772956.

It is an arithmetic number, because the mean of its divisors is an integer number (3091545908).

Almost surely, 2^9274637721 is an apocalyptic number.

It is an amenable number.

9274637721 is a deficient number, since it is larger than the sum of its proper divisors (3091545911).

9274637721 is a wasteful number, since it uses less digits than its factorization.

9274637721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3091545910.

The product of its digits is 889056, while the sum is 48.

The square root of 9274637721 is about 96304.9205440719. The cubic root of 9274637721 is about 2101.0303123343.

The spelling of 9274637721 in words is "nine billion, two hundred seventy-four million, six hundred thirty-seven thousand, seven hundred twenty-one".