9040914979721 has 4 divisors (see below), whose sum is σ = 9042075716100. Its totient is φ = 9039754243344.

The previous prime is 9040914979717. The next prime is 9040914979787. The reversal of 9040914979721 is 1279794190409.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7925694498121 + 1115220481600 = 2815261^2 + 1056040^2 .

It is a cyclic number.

It is not a de Polignac number, because 9040914979721 - 2² = 9040914979717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9040914979121) 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, 580356506 + ... + 580372083.

It is an arithmetic number, because the mean of its divisors is an integer number (2260518929025).

Almost surely, 2^{9040914979721} is an apocalyptic number.

It is an amenable number.

9040914979721 is a deficient number, since it is larger than the sum of its proper divisors (1160736379).

9040914979721 is a wasteful number, since it uses less digits than its factorization.

9040914979721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160736378.

The product of its (nonzero) digits is 10287648, while the sum is 62.

The spelling of 9040914979721 in words is "nine trillion, forty billion, nine hundred fourteen million, nine hundred seventy-nine thousand, seven hundred twenty-one".