454243939 has 2 divisors, whose sum is σ = 454243940. Its totient is φ = 454243938.

The previous prime is 454243903. The next prime is 454243943. The reversal of 454243939 is 939342454.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 454243939 - 2¹¹ = 454241891 is a prime.

It is a super-2 number, since 2×454243939² = 412675112236471442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 454243895 and 454243904.

It is not a weakly prime, because it can be changed into another prime (454240939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227121969 + 227121970.

It is an arithmetic number, because the mean of its divisors is an integer number (227121970).

Almost surely, 2^454243939 is an apocalyptic number.

454243939 is a deficient number, since it is larger than the sum of its proper divisors (1).

454243939 is an equidigital number, since it uses as much as digits as its factorization.

454243939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 43.

The square root of 454243939 is about 21312.9992962042. Note that the first 3 decimals coincide. The cubic root of 454243939 is about 768.7109138785.

The spelling of 454243939 in words is "four hundred fifty-four million, two hundred forty-three thousand, nine hundred thirty-nine".