386884987 has 4 divisors (see below), whose sum is σ = 397341376. Its totient is φ = 376428600.

The previous prime is 386884957. The next prime is 386885003. The reversal of 386884987 is 789488683.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 386884987 - 2¹⁹ = 386360699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (386884957) 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, 5228139 + ... + 5228212.

It is an arithmetic number, because the mean of its divisors is an integer number (99335344).

Almost surely, 2^386884987 is an apocalyptic number.

386884987 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

386884987 is a deficient number, since it is larger than the sum of its proper divisors (10456389).

386884987 is a wasteful number, since it uses less digits than its factorization.

386884987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10456388.

The product of its digits is 18579456, while the sum is 61.

The square root of 386884987 is about 19669.3921360066. The cubic root of 386884987 is about 728.6639646310.

The spelling of 386884987 in words is "three hundred eighty-six million, eight hundred eighty-four thousand, nine hundred eighty-seven".