387694171 has 4 divisors (see below), whose sum is σ = 388059952. Its totient is φ = 387328392.

The previous prime is 387694157. The next prime is 387694189. The reversal of 387694171 is 171496783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 171496783 = 73 ⋅2349271.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387694171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387694121) 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 3 ways as a sum of consecutive naturals, for example, 181296 + ... + 183421.

It is an arithmetic number, because the mean of its divisors is an integer number (97014988).

Almost surely, 2^387694171 is an apocalyptic number.

387694171 is a deficient number, since it is larger than the sum of its proper divisors (365781).

387694171 is a wasteful number, since it uses less digits than its factorization.

387694171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365780.

The product of its digits is 254016, while the sum is 46.

The square root of 387694171 is about 19689.9510156831. The cubic root of 387694171 is about 729.1716199166.

The spelling of 387694171 in words is "three hundred eighty-seven million, six hundred ninety-four thousand, one hundred seventy-one".