4091600921 has 2 divisors, whose sum is σ = 4091600922. Its totient is φ = 4091600920.

The previous prime is 4091600881. The next prime is 4091600959. The reversal of 4091600921 is 1290061904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2621952025 + 1469648896 = 51205^2 + 38336^2 .

It is a cyclic number.

It is not a de Polignac number, because 4091600921 - 2⁶ = 4091600857 is a prime.

It is not a weakly prime, because it can be changed into another prime (4091600221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2045800460 + 2045800461.

It is an arithmetic number, because the mean of its divisors is an integer number (2045800461).

Almost surely, 2^4091600921 is an apocalyptic number.

It is an amenable number.

4091600921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4091600921 is an equidigital number, since it uses as much as digits as its factorization.

4091600921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 4091600921 is about 63965.6229626508. The cubic root of 4091600921 is about 1599.4269980727.

The spelling of 4091600921 in words is "four billion, ninety-one million, six hundred thousand, nine hundred twenty-one".