384930457 has 2 divisors, whose sum is σ = 384930458. Its totient is φ = 384930456.

The previous prime is 384930449. The next prime is 384930479. The reversal of 384930457 is 754039483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372142681 + 12787776 = 19291^2 + 3576^2 .

It is a cyclic number.

It is not a de Polignac number, because 384930457 - 2³ = 384930449 is a prime.

It is not a weakly prime, because it can be changed into another prime (384930757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192465228 + 192465229.

It is an arithmetic number, because the mean of its divisors is an integer number (192465229).

Almost surely, 2^384930457 is an apocalyptic number.

It is an amenable number.

384930457 is a deficient number, since it is larger than the sum of its proper divisors (1).

384930457 is an equidigital number, since it uses as much as digits as its factorization.

384930457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 384930457 is about 19619.6446705846. The cubic root of 384930457 is about 727.4348304695.

The spelling of 384930457 in words is "three hundred eighty-four million, nine hundred thirty thousand, four hundred fifty-seven".