387888539 has 4 divisors (see below), whose sum is σ = 388945824. Its totient is φ = 386831256.

The previous prime is 387888517. The next prime is 387888551. The reversal of 387888539 is 935888783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 935888783 = 29 ⋅32272027.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387888539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387888559) 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, 528092 + ... + 528825.

It is an arithmetic number, because the mean of its divisors is an integer number (97236456).

Almost surely, 2^387888539 is an apocalyptic number.

387888539 is a deficient number, since it is larger than the sum of its proper divisors (1057285).

387888539 is a wasteful number, since it uses less digits than its factorization.

387888539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057284.

The product of its digits is 11612160, while the sum is 59.

The square root of 387888539 is about 19694.8861128974. The cubic root of 387888539 is about 729.2934547389.

The spelling of 387888539 in words is "three hundred eighty-seven million, eight hundred eighty-eight thousand, five hundred thirty-nine".