385204427 has 2 divisors, whose sum is σ = 385204428. Its totient is φ = 385204426.

The previous prime is 385204403. The next prime is 385204441. The reversal of 385204427 is 724402583.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385204427 is a prime.

It is equal to p_20588732 and since 385204427 and 20588732 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (385204627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192602213 + 192602214.

It is an arithmetic number, because the mean of its divisors is an integer number (192602214).

Almost surely, 2^385204427 is an apocalyptic number.

385204427 is a deficient number, since it is larger than the sum of its proper divisors (1).

385204427 is an equidigital number, since it uses as much as digits as its factorization.

385204427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 385204427 is about 19626.6254613471. The cubic root of 385204427 is about 727.6073707760.

The spelling of 385204427 in words is "three hundred eighty-five million, two hundred four thousand, four hundred twenty-seven".