387831441 has 4 divisors (see below), whose sum is σ = 517108592. Its totient is φ = 258554292.

The previous prime is 387831403. The next prime is 387831449. The reversal of 387831441 is 144138783.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 387831441 - 2¹⁵ = 387798673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 387831441.

It is not an unprimeable number, because it can be changed into a prime (387831449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64638571 + ... + 64638576.

It is an arithmetic number, because the mean of its divisors is an integer number (129277148).

Almost surely, 2^387831441 is an apocalyptic number.

It is an amenable number.

387831441 is a deficient number, since it is larger than the sum of its proper divisors (129277151).

387831441 is a wasteful number, since it uses less digits than its factorization.

387831441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129277150.

The product of its digits is 64512, while the sum is 39.

The square root of 387831441 is about 19693.4364954418. The cubic root of 387831441 is about 729.2576684783.

The spelling of 387831441 in words is "three hundred eighty-seven million, eight hundred thirty-one thousand, four hundred forty-one".