385400273 has 2 divisors, whose sum is σ = 385400274. Its totient is φ = 385400272.

The previous prime is 385400263. The next prime is 385400293. The reversal of 385400273 is 372004583.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 306670144 + 78730129 = 17512^2 + 8873^2 .

It is a cyclic number.

It is not a de Polignac number, because 385400273 - 2¹⁸ = 385138129 is a prime.

It is not a weakly prime, because it can be changed into another prime (385400203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192700136 + 192700137.

It is an arithmetic number, because the mean of its divisors is an integer number (192700137).

Almost surely, 2^385400273 is an apocalyptic number.

It is an amenable number.

385400273 is a deficient number, since it is larger than the sum of its proper divisors (1).

385400273 is an equidigital number, since it uses as much as digits as its factorization.

385400273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 385400273 is about 19631.6141211058. The cubic root of 385400273 is about 727.7306601605.

The spelling of 385400273 in words is "three hundred eighty-five million, four hundred thousand, two hundred seventy-three".