387640290129 has 8 divisors (see below), whose sum is σ = 516881863872. Its totient is φ = 258412788240.

The previous prime is 387640290077. The next prime is 387640290223. The reversal of 387640290129 is 921092046783.

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

It is not a de Polignac number, because 387640290129 - 2⁷ = 387640290001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (387640292129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3453517 + ... + 3563994.

It is an arithmetic number, because the mean of its divisors is an integer number (64610232984).

Almost surely, 2^387640290129 is an apocalyptic number.

It is an amenable number.

387640290129 is a deficient number, since it is larger than the sum of its proper divisors (129241573743).

387640290129 is a wasteful number, since it uses less digits than its factorization.

387640290129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7035927.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 387640290129 in words is "three hundred eighty-seven billion, six hundred forty million, two hundred ninety thousand, one hundred twenty-nine".