493346221 has 2 divisors, whose sum is σ = 493346222. Its totient is φ = 493346220.

The previous prime is 493346219. The next prime is 493346261. The reversal of 493346221 is 122643394.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372104100 + 121242121 = 19290^2 + 11011^2 .

It is a cyclic number.

It is not a de Polignac number, because 493346221 - 2¹ = 493346219 is a prime.

Together with 493346219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (493346261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246673110 + 246673111.

It is an arithmetic number, because the mean of its divisors is an integer number (246673111).

Almost surely, 2^493346221 is an apocalyptic number.

It is an amenable number.

493346221 is a deficient number, since it is larger than the sum of its proper divisors (1).

493346221 is an equidigital number, since it uses as much as digits as its factorization.

493346221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 34.

The square root of 493346221 is about 22211.3984476439. The cubic root of 493346221 is about 790.1640534159.

It can be divided in two parts, 49334 and 6221, that added together give a palindrome (55555).

The spelling of 493346221 in words is "four hundred ninety-three million, three hundred forty-six thousand, two hundred twenty-one".