390841 has 4 divisors (see below), whose sum is σ = 426384. Its totient is φ = 355300.

The previous prime is 390829. The next prime is 390851. The reversal of 390841 is 148093.

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, and also an emirpimes, since its reverse is a distinct semiprime: 148093 = 11 ⋅13463.

It is not a de Polignac number, because 390841 - 2⁵ = 390809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390821) 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 3 ways as a sum of consecutive naturals, for example, 17755 + ... + 17776.

It is an arithmetic number, because the mean of its divisors is an integer number (106596).

2³⁹⁰⁸⁴¹ is an apocalyptic number.

It is an amenable number.

390841 is a deficient number, since it is larger than the sum of its proper divisors (35543).

390841 is a wasteful number, since it uses less digits than its factorization.

390841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35542.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 390841 is about 625.1727761187. The cubic root of 390841 is about 73.1139148463.

The spelling of 390841 in words is "three hundred ninety thousand, eight hundred forty-one".