9091710421 has 2 divisors, whose sum is σ = 9091710422. Its totient is φ = 9091710420.

The previous prime is 9091710391. The next prime is 9091710427. The reversal of 9091710421 is 1240171909.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5915148100 + 3176562321 = 76910^2 + 56361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9091710421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9091710427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4545855210 + 4545855211.

It is an arithmetic number, because the mean of its divisors is an integer number (4545855211).

Almost surely, 2^9091710421 is an apocalyptic number.

It is an amenable number.

9091710421 is a deficient number, since it is larger than the sum of its proper divisors (1).

9091710421 is an equidigital number, since it uses as much as digits as its factorization.

9091710421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 9091710421 is about 95350.4610424092. The cubic root of 9091710421 is about 2087.1253429523.

The spelling of 9091710421 in words is "nine billion, ninety-one million, seven hundred ten thousand, four hundred twenty-one".