457838309 has 2 divisors, whose sum is σ = 457838310. Its totient is φ = 457838308.

The previous prime is 457838291. The next prime is 457838323. The reversal of 457838309 is 903838754.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 452753284 + 5085025 = 21278^2 + 2255^2 .

It is a cyclic number.

It is not a de Polignac number, because 457838309 - 2¹² = 457834213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (457838389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228919154 + 228919155.

It is an arithmetic number, because the mean of its divisors is an integer number (228919155).

Almost surely, 2^457838309 is an apocalyptic number.

It is an amenable number.

457838309 is a deficient number, since it is larger than the sum of its proper divisors (1).

457838309 is an equidigital number, since it uses as much as digits as its factorization.

457838309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 457838309 is about 21397.1565634315. The cubic root of 457838309 is about 770.7331573258.

The spelling of 457838309 in words is "four hundred fifty-seven million, eight hundred thirty-eight thousand, three hundred nine".