386887047 has 4 divisors (see below), whose sum is σ = 515849400. Its totient is φ = 257924696.

The previous prime is 386887043. The next prime is 386887049. The reversal of 386887047 is 740788683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740788683 = 3 ⋅246929561.

It is a cyclic number.

It is not a de Polignac number, because 386887047 - 2² = 386887043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386887043) 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 3 ways as a sum of consecutive naturals, for example, 64481172 + ... + 64481177.

It is an arithmetic number, because the mean of its divisors is an integer number (128962350).

Almost surely, 2^386887047 is an apocalyptic number.

386887047 is a deficient number, since it is larger than the sum of its proper divisors (128962353).

386887047 is a wasteful number, since it uses less digits than its factorization.

386887047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128962352.

The product of its (nonzero) digits is 1806336, while the sum is 51.

The square root of 386887047 is about 19669.4445015613. Note that the first 3 decimals coincide. The cubic root of 386887047 is about 728.6652579052.

The spelling of 386887047 in words is "three hundred eighty-six million, eight hundred eighty-seven thousand, forty-seven".