384115715 has 4 divisors (see below), whose sum is σ = 460938864. Its totient is φ = 307292568.

The previous prime is 384115703. The next prime is 384115717. The reversal of 384115715 is 517511483.

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

It is a cyclic number.

It is not a de Polignac number, because 384115715 - 2⁶ = 384115651 is a prime.

It is a super-2 number, since 2×384115715² = 295089765019922450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384115717) 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, 38411567 + ... + 38411576.

It is an arithmetic number, because the mean of its divisors is an integer number (115234716).

Almost surely, 2^384115715 is an apocalyptic number.

384115715 is a deficient number, since it is larger than the sum of its proper divisors (76823149).

384115715 is an equidigital number, since it uses as much as digits as its factorization.

384115715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76823148.

The product of its digits is 16800, while the sum is 35.

The square root of 384115715 is about 19598.8702480526. The cubic root of 384115715 is about 726.9212395607.

The spelling of 384115715 in words is "three hundred eighty-four million, one hundred fifteen thousand, seven hundred fifteen".