385272973 has 2 divisors, whose sum is σ = 385272974. Its totient is φ = 385272972.

The previous prime is 385272961. The next prime is 385273043. The reversal of 385272973 is 379272583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 288388324 + 96884649 = 16982^2 + 9843^2 .

It is an emirp because it is prime and its reverse (379272583) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385272973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385272373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192636486 + 192636487.

It is an arithmetic number, because the mean of its divisors is an integer number (192636487).

Almost surely, 2^385272973 is an apocalyptic number.

It is an amenable number.

385272973 is a deficient number, since it is larger than the sum of its proper divisors (1).

385272973 is an equidigital number, since it uses as much as digits as its factorization.

385272973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 46.

The square root of 385272973 is about 19628.3716339385. The cubic root of 385272973 is about 727.6505267501.

The spelling of 385272973 in words is "three hundred eighty-five million, two hundred seventy-two thousand, nine hundred seventy-three".