387381983 has 6 divisors (see below), whose sum is σ = 400282272. Its totient is φ = 374884860.

The previous prime is 387381959. The next prime is 387382001. The reversal of 387381983 is 389183783.

It is not a de Polignac number, because 387381983 - 2⁶ = 387381919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387381923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 200591 + ... + 202512.

It is an arithmetic number, because the mean of its divisors is an integer number (66713712).

Almost surely, 2^387381983 is an apocalyptic number.

387381983 is a deficient number, since it is larger than the sum of its proper divisors (12900289).

387381983 is an equidigital number, since it uses as much as digits as its factorization.

387381983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403165 (or 403134 counting only the distinct ones).

The product of its digits is 870912, while the sum is 50.

The square root of 387381983 is about 19682.0218219572. The cubic root of 387381983 is about 728.9758472557.

The spelling of 387381983 in words is "three hundred eighty-seven million, three hundred eighty-one thousand, nine hundred eighty-three".