454238749 has 2 divisors, whose sum is σ = 454238750. Its totient is φ = 454238748.

The previous prime is 454238747. The next prime is 454238809. The reversal of 454238749 is 947832454.

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., 362902500 + 91336249 = 19050^2 + 9557^2 .

It is a cyclic number.

It is not a de Polignac number, because 454238749 - 2¹ = 454238747 is a prime.

Together with 454238747, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 454238699 and 454238708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (454238747) 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, 227119374 + 227119375.

It is an arithmetic number, because the mean of its divisors is an integer number (227119375).

Almost surely, 2^454238749 is an apocalyptic number.

It is an amenable number.

454238749 is a deficient number, since it is larger than the sum of its proper divisors (1).

454238749 is an equidigital number, since it uses as much as digits as its factorization.

454238749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 46.

The square root of 454238749 is about 21312.8775391780. The cubic root of 454238749 is about 768.7079862116.

The spelling of 454238749 in words is "four hundred fifty-four million, two hundred thirty-eight thousand, seven hundred forty-nine".