390071 has 4 divisors (see below), whose sum is σ = 425544. Its totient is φ = 354600.

The previous prime is 390067. The next prime is 390077. The reversal of 390071 is 170093.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 390071 - 2² = 390067 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 (390077) 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, 17720 + ... + 17741.

It is an arithmetic number, because the mean of its divisors is an integer number (106386).

2³⁹⁰⁰⁷¹ is an apocalyptic number.

390071 is a deficient number, since it is larger than the sum of its proper divisors (35473).

390071 is a wasteful number, since it uses less digits than its factorization.

390071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35472.

The product of its (nonzero) digits is 189, while the sum is 20.

The square root of 390071 is about 624.5566427475. The cubic root of 390071 is about 73.0658691143.

The spelling of 390071 in words is "three hundred ninety thousand, seventy-one".