993297493 has 2 divisors, whose sum is σ = 993297494. Its totient is φ = 993297492.

The previous prime is 993297469. The next prime is 993297497. The reversal of 993297493 is 394792399.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 760490929 + 232806564 = 27577^2 + 15258^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-993297493 is a prime.

It is a super-3 number, since 3×993297493³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993297497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496648746 + 496648747.

It is an arithmetic number, because the mean of its divisors is an integer number (496648747).

Almost surely, 2^993297493 is an apocalyptic number.

It is an amenable number.

993297493 is a deficient number, since it is larger than the sum of its proper divisors (1).

993297493 is an equidigital number, since it uses as much as digits as its factorization.

993297493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3306744, while the sum is 55.

The square root of 993297493 is about 31516.6224871892. The cubic root of 993297493 is about 997.7608208190.

The spelling of 993297493 in words is "nine hundred ninety-three million, two hundred ninety-seven thousand, four hundred ninety-three".