387983643 has 8 divisors (see below), whose sum is σ = 517425168. Its totient is φ = 258598944.

The previous prime is 387983627. The next prime is 387983677. The reversal of 387983643 is 346389783.

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

It is not a de Polignac number, because 387983643 - 2⁴ = 387983627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (387983623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5721 + ... + 28437.

It is an arithmetic number, because the mean of its divisors is an integer number (64678146).

Almost surely, 2^387983643 is an apocalyptic number.

387983643 is a deficient number, since it is larger than the sum of its proper divisors (129441525).

387983643 is a wasteful number, since it uses less digits than its factorization.

387983643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28413.

The product of its digits is 2612736, while the sum is 51.

The square root of 387983643 is about 19697.3003987856. The cubic root of 387983643 is about 729.3530535239.

The spelling of 387983643 in words is "three hundred eighty-seven million, nine hundred eighty-three thousand, six hundred forty-three".