457212109 has 2 divisors, whose sum is σ = 457212110. Its totient is φ = 457212108.

The previous prime is 457212073. The next prime is 457212113. The reversal of 457212109 is 901212754.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354757225 + 102454884 = 18835^2 + 10122^2 .

It is a cyclic number.

It is not a de Polignac number, because 457212109 - 2⁹ = 457211597 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (457212169) 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, 228606054 + 228606055.

It is an arithmetic number, because the mean of its divisors is an integer number (228606055).

Almost surely, 2^457212109 is an apocalyptic number.

It is an amenable number.

457212109 is a deficient number, since it is larger than the sum of its proper divisors (1).

457212109 is an equidigital number, since it uses as much as digits as its factorization.

457212109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 457212109 is about 21382.5187711832. The cubic root of 457212109 is about 770.3816115956.

The spelling of 457212109 in words is "four hundred fifty-seven million, two hundred twelve thousand, one hundred nine".