457445909 has 2 divisors, whose sum is σ = 457445910. Its totient is φ = 457445908.

The previous prime is 457445887. The next prime is 457445927. The reversal of 457445909 is 909544754.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 427579684 + 29866225 = 20678^2 + 5465^2 .

It is a cyclic number.

It is not a de Polignac number, because 457445909 - 2¹² = 457441813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (457445929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228722954 + 228722955.

It is an arithmetic number, because the mean of its divisors is an integer number (228722955).

Almost surely, 2^457445909 is an apocalyptic number.

It is an amenable number.

457445909 is a deficient number, since it is larger than the sum of its proper divisors (1).

457445909 is an equidigital number, since it uses as much as digits as its factorization.

457445909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 457445909 is about 21387.9851552221. The cubic root of 457445909 is about 770.5129033416.

The spelling of 457445909 in words is "four hundred fifty-seven million, four hundred forty-five thousand, nine hundred nine".