385249917 has 8 divisors (see below), whose sum is σ = 553179424. Its totient is φ = 237076848.

The previous prime is 385249913. The next prime is 385249967. The reversal of 385249917 is 719942583.

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

It is not a de Polignac number, because 385249917 - 2² = 385249913 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 (385249913) 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, 4939063 + ... + 4939140.

It is an arithmetic number, because the mean of its divisors is an integer number (69147428).

Almost surely, 2^385249917 is an apocalyptic number.

It is an amenable number.

385249917 is a deficient number, since it is larger than the sum of its proper divisors (167929507).

385249917 is a wasteful number, since it uses less digits than its factorization.

385249917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9878219.

The product of its digits is 544320, while the sum is 48.

The square root of 385249917 is about 19627.7843120409. The cubic root of 385249917 is about 727.6360114615.

The spelling of 385249917 in words is "three hundred eighty-five million, two hundred forty-nine thousand, nine hundred seventeen".