387124389 has 12 divisors (see below), whose sum is σ = 559529100. Its totient is φ = 257921664.

The previous prime is 387124363. The next prime is 387124417. The reversal of 387124389 is 983421783.

It can be written as a sum of positive squares in 2 ways, for example, as 82901025 + 304223364 = 9105^2 + 17442^2 .

It is not a de Polignac number, because 387124389 - 2²³ = 378735781 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387124319) 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 11 ways as a sum of consecutive naturals, for example, 2797 + ... + 27965.

It is an arithmetic number, because the mean of its divisors is an integer number (46627425).

Almost surely, 2^387124389 is an apocalyptic number.

It is an amenable number.

387124389 is a deficient number, since it is larger than the sum of its proper divisors (172404711).

387124389 is a wasteful number, since it uses less digits than its factorization.

387124389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26884 (or 26881 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 387124389 is about 19675.4768430145. The cubic root of 387124389 is about 728.8142312022.

The spelling of 387124389 in words is "three hundred eighty-seven million, one hundred twenty-four thousand, three hundred eighty-nine".