387185139 has 24 divisors (see below), whose sum is σ = 611500032. Its totient is φ = 234123120.

The previous prime is 387185129. The next prime is 387185159. The reversal of 387185139 is 931581783.

It is not a de Polignac number, because 387185139 - 2¹¹ = 387183091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 387185094 and 387185103.

It is not an unprimeable number, because it can be changed into a prime (387185129) 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 23 ways as a sum of consecutive naturals, for example, 41614 + ... + 50060.

It is an arithmetic number, because the mean of its divisors is an integer number (25479168).

Almost surely, 2^387185139 is an apocalyptic number.

387185139 is a deficient number, since it is larger than the sum of its proper divisors (224314893).

387185139 is a wasteful number, since it uses less digits than its factorization.

387185139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8927 (or 8924 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 387185139 is about 19677.0205823951. The cubic root of 387185139 is about 728.8523525830.

The spelling of 387185139 in words is "three hundred eighty-seven million, one hundred eighty-five thousand, one hundred thirty-nine".