727812493 has 2 divisors, whose sum is σ = 727812494. Its totient is φ = 727812492.

The previous prime is 727812473. The next prime is 727812521. The reversal of 727812493 is 394218727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 727812484 + 9 = 26978^2 + 3^2 .

It is a cyclic number.

It is not a de Polignac number, because 727812493 - 2¹⁷ = 727681421 is a prime.

It is a super-2 number, since 2×727812493² = 1059422049933750098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (727812413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363906246 + 363906247.

It is an arithmetic number, because the mean of its divisors is an integer number (363906247).

Almost surely, 2^727812493 is an apocalyptic number.

It is an amenable number.

727812493 is a deficient number, since it is larger than the sum of its proper divisors (1).

727812493 is an equidigital number, since it uses as much as digits as its factorization.

727812493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 43.

The square root of 727812493 is about 26978.0001668026. Note that the first 3 decimals coincide. The cubic root of 727812493 is about 899.5110484025.

The spelling of 727812493 in words is "seven hundred twenty-seven million, eight hundred twelve thousand, four hundred ninety-three".