385505417 has 4 divisors (see below), whose sum is σ = 420551376. Its totient is φ = 350459460.

The previous prime is 385505389. The next prime is 385505437. The reversal of 385505417 is 714505583.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 385505417 - 2⁶ = 385505353 is a prime.

It is a super-2 number, since 2×385505417² = 297228853072687778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385505437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17522963 + ... + 17522984.

It is an arithmetic number, because the mean of its divisors is an integer number (105137844).

Almost surely, 2^385505417 is an apocalyptic number.

It is an amenable number.

385505417 is a deficient number, since it is larger than the sum of its proper divisors (35045959).

385505417 is a wasteful number, since it uses less digits than its factorization.

385505417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35045958.

The product of its (nonzero) digits is 84000, while the sum is 38.

The square root of 385505417 is about 19634.2918639812. The cubic root of 385505417 is about 727.7968334014.

The spelling of 385505417 in words is "three hundred eighty-five million, five hundred five thousand, four hundred seventeen".