390247 has 8 divisors (see below), whose sum is σ = 458640. Its totient is φ = 327360.

The previous prime is 390223. The next prime is 390263. The reversal of 390247 is 742093.

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

It is not a de Polignac number, because 390247 - 2⁷ = 390119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390347) 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, 1222 + ... + 1507.

It is an arithmetic number, because the mean of its divisors is an integer number (57330).

2³⁹⁰²⁴⁷ is an apocalyptic number.

390247 is a deficient number, since it is larger than the sum of its proper divisors (68393).

390247 is a wasteful number, since it uses less digits than its factorization.

390247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 390247 is about 624.6975268080. The cubic root of 390247 is about 73.0768565665.

The spelling of 390247 in words is "three hundred ninety thousand, two hundred forty-seven".