385249955 has 4 divisors (see below), whose sum is σ = 462299952. Its totient is φ = 308199960.

The previous prime is 385249913. The next prime is 385249967. The reversal of 385249955 is 559942583.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 385249955 - 2¹⁴ = 385233571 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 38524991 + ... + 38525000.

It is an arithmetic number, because the mean of its divisors is an integer number (115574988).

Almost surely, 2^385249955 is an apocalyptic number.

385249955 is a deficient number, since it is larger than the sum of its proper divisors (77049997).

385249955 is an equidigital number, since it uses as much as digits as its factorization.

385249955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77049996.

The product of its digits is 1944000, while the sum is 50.

The square root of 385249955 is about 19627.7852800564. The cubic root of 385249955 is about 727.6360353855.

The spelling of 385249955 in words is "three hundred eighty-five million, two hundred forty-nine thousand, nine hundred fifty-five".