454143493 has 2 divisors, whose sum is σ = 454143494. Its totient is φ = 454143492.

The previous prime is 454143463. The next prime is 454143499. The reversal of 454143493 is 394341454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 407111329 + 47032164 = 20177^2 + 6858^2 .

It is a cyclic number.

It is not a de Polignac number, because 454143493 - 2²¹ = 452046341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (454143499) 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, 227071746 + 227071747.

It is an arithmetic number, because the mean of its divisors is an integer number (227071747).

Almost surely, 2^454143493 is an apocalyptic number.

It is an amenable number.

454143493 is a deficient number, since it is larger than the sum of its proper divisors (1).

454143493 is an equidigital number, since it uses as much as digits as its factorization.

454143493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 37.

The square root of 454143493 is about 21310.6427167272. The cubic root of 454143493 is about 768.6542485629.

The spelling of 454143493 in words is "four hundred fifty-four million, one hundred forty-three thousand, four hundred ninety-three".