390671 has 2 divisors, whose sum is σ = 390672. Its totient is φ = 390670.

The previous prime is 390653. The next prime is 390673. The reversal of 390671 is 176093.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 390671 - 2¹⁴ = 374287 is a prime.

Together with 390673, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 390671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195335 + 195336.

It is an arithmetic number, because the mean of its divisors is an integer number (195336).

2³⁹⁰⁶⁷¹ is an apocalyptic number.

390671 is a deficient number, since it is larger than the sum of its proper divisors (1).

390671 is an equidigital number, since it uses as much as digits as its factorization.

390671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 390671 is about 625.0367989167. The cubic root of 390671 is about 73.1033127788.

The spelling of 390671 in words is "three hundred ninety thousand, six hundred seventy-one".