385228407 has 8 divisors (see below), whose sum is σ = 515163376. Its totient is φ = 256056192.

The previous prime is 385228399. The next prime is 385228421. The reversal of 385228407 is 704822583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 385228407 - 2³ = 385228399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385228427) 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 in 7 ways as a sum of consecutive naturals, for example, 189508 + ... + 191529.

It is an arithmetic number, because the mean of its divisors is an integer number (64395422).

Almost surely, 2^385228407 is an apocalyptic number.

385228407 is a deficient number, since it is larger than the sum of its proper divisors (129934969).

385228407 is a wasteful number, since it uses less digits than its factorization.

385228407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381377.

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 385228407 is about 19627.2363566550. The cubic root of 385228407 is about 727.6224689607.

The spelling of 385228407 in words is "three hundred eighty-five million, two hundred twenty-eight thousand, four hundred seven".