390871 has 8 divisors (see below), whose sum is σ = 426384. Its totient is φ = 356160.

The previous prime is 390869. The next prime is 390877. The reversal of 390871 is 178093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 390871 - 2¹ = 390869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1251 + ... + 1531.

It is an arithmetic number, because the mean of its divisors is an integer number (53298).

2³⁹⁰⁸⁷¹ is an apocalyptic number.

390871 is a deficient number, since it is larger than the sum of its proper divisors (35513).

390871 is a wasteful number, since it uses less digits than its factorization.

390871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 390871 is about 625.1967690256. The cubic root of 390871 is about 73.1157854803.

The spelling of 390871 in words is "three hundred ninety thousand, eight hundred seventy-one".