9096721 has 2 divisors, whose sum is σ = 9096722. Its totient is φ = 9096720.

The previous prime is 9096713. The next prime is 9096727. The reversal of 9096721 is 1276909.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9000000 + 96721 = 3000^2 + 311^2 .

It is a cyclic number.

It is not a de Polignac number, because 9096721 - 2³ = 9096713 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (9096727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4548360 + 4548361.

It is an arithmetic number, because the mean of its divisors is an integer number (4548361).

Almost surely, 2^9096721 is an apocalyptic number.

It is an amenable number.

9096721 is a deficient number, since it is larger than the sum of its proper divisors (1).

9096721 is an equidigital number, since it uses as much as digits as its factorization.

9096721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 9096721 is about 3016.0770878742. The cubic root of 9096721 is about 208.7508687977.

The spelling of 9096721 in words is "nine million, ninety-six thousand, seven hundred twenty-one".