385400263 has 2 divisors, whose sum is σ = 385400264. Its totient is φ = 385400262.

The previous prime is 385400243. The next prime is 385400273. The reversal of 385400263 is 362004583.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 385400263 - 2²¹ = 383303111 is a prime.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192700131 + 192700132.

It is an arithmetic number, because the mean of its divisors is an integer number (192700132).

Almost surely, 2^385400263 is an apocalyptic number.

385400263 is a deficient number, since it is larger than the sum of its proper divisors (1).

385400263 is an equidigital number, since it uses as much as digits as its factorization.

385400263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 385400263 is about 19631.6138664145. The cubic root of 385400263 is about 727.7306538664.

The spelling of 385400263 in words is "three hundred eighty-five million, four hundred thousand, two hundred sixty-three".