385642317 has 8 divisors (see below), whose sum is σ = 515533824. Its totient is φ = 256422848.

The previous prime is 385642307. The next prime is 385642321. The reversal of 385642317 is 713246583.

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

It is a cyclic number.

It is not a de Polignac number, because 385642317 - 2¹² = 385638221 is a prime.

It is a super-2 number, since 2×385642317² = 297439993322256978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385642307) 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, 166668 + ... + 168965.

It is an arithmetic number, because the mean of its divisors is an integer number (64441728).

Almost surely, 2^385642317 is an apocalyptic number.

It is an amenable number.

385642317 is a deficient number, since it is larger than the sum of its proper divisors (129891507).

385642317 is a wasteful number, since it uses less digits than its factorization.

385642317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336019.

The product of its digits is 120960, while the sum is 39.

The square root of 385642317 is about 19637.7778019816. Note that the first 3 decimals coincide. The cubic root of 385642317 is about 727.8829745123.

The spelling of 385642317 in words is "three hundred eighty-five million, six hundred forty-two thousand, three hundred seventeen".