9121493 has 2 divisors, whose sum is σ = 9121494. Its totient is φ = 9121492.

The previous prime is 9121439. The next prime is 9121523. The reversal of 9121493 is 3941219.

It is a happy number.

Together with previous prime (9121439) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8868484 + 253009 = 2978^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 9121493 - 2²² = 4927189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9121403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4560746 + 4560747.

It is an arithmetic number, because the mean of its divisors is an integer number (4560747).

Almost surely, 2^9121493 is an apocalyptic number.

It is an amenable number.

9121493 is a deficient number, since it is larger than the sum of its proper divisors (1).

9121493 is an equidigital number, since it uses as much as digits as its factorization.

9121493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 29.

The square root of 9121493 is about 3020.1809548436. The cubic root of 9121493 is about 208.9401857174.

The spelling of 9121493 in words is "nine million, one hundred twenty-one thousand, four hundred ninety-three".