387139854 has 32 divisors (see below), whose sum is σ = 794085120. Its totient is φ = 125787200.

The previous prime is 387139853. The next prime is 387139897. The reversal of 387139854 is 458931783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387139853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32809 + ... + 43019.

It is an arithmetic number, because the mean of its divisors is an integer number (24815160).

Almost surely, 2^387139854 is an apocalyptic number.

387139854 is an abundant number, since it is smaller than the sum of its proper divisors (406945266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

387139854 is a wasteful number, since it uses less digits than its factorization.

387139854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10376.

The product of its digits is 725760, while the sum is 48.

The square root of 387139854 is about 19675.8698410007. The cubic root of 387139854 is about 728.8239360605.

The spelling of 387139854 in words is "three hundred eighty-seven million, one hundred thirty-nine thousand, eight hundred fifty-four".