387841 has 4 divisors (see below), whose sum is σ = 400384. Its totient is φ = 375300.

The previous prime is 387839. The next prime is 387853. The reversal of 387841 is 148783.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 387841 - 2¹ = 387839 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 12511 = 387841 / (3 + 8 + 7 + 8 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387341) 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, 6225 + ... + 6286.

It is an arithmetic number, because the mean of its divisors is an integer number (100096).

2³⁸⁷⁸⁴¹ is an apocalyptic number.

387841 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

387841 is a deficient number, since it is larger than the sum of its proper divisors (12543).

387841 is a wasteful number, since it uses less digits than its factorization.

387841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12542.

The product of its digits is 5376, while the sum is 31.

The square root of 387841 is about 622.7688174596. The cubic root of 387841 is about 72.9263659841.

The spelling of 387841 in words is "three hundred eighty-seven thousand, eight hundred forty-one".