387921423 has 8 divisors (see below), whose sum is σ = 544451200. Its totient is φ = 245002968.

The previous prime is 387921407. The next prime is 387921433. The reversal of 387921423 is 324129783.

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

It is not a de Polignac number, because 387921423 - 2⁴ = 387921407 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 (387921433) 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 7 ways as a sum of consecutive naturals, for example, 3402763 + ... + 3402876.

It is an arithmetic number, because the mean of its divisors is an integer number (68056400).

Almost surely, 2^387921423 is an apocalyptic number.

387921423 is a deficient number, since it is larger than the sum of its proper divisors (156529777).

387921423 is a wasteful number, since it uses less digits than its factorization.

387921423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6805661.

The product of its digits is 72576, while the sum is 39.

The square root of 387921423 is about 19695.7209312074. The cubic root of 387921423 is about 729.3140632436.

The spelling of 387921423 in words is "three hundred eighty-seven million, nine hundred twenty-one thousand, four hundred twenty-three".