390847 has 8 divisors (see below), whose sum is σ = 420336. Its totient is φ = 362112.

The previous prime is 390829. The next prime is 390851. The reversal of 390847 is 748093.

It is a happy number.

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 390847 - 2¹⁵ = 358079 is a prime.

It is a super-2 number, since 2×390847² = 305522754818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 390847.

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, 1273 + ... + 1549.

It is an arithmetic number, because the mean of its divisors is an integer number (52542).

390847 is a Friedman number, since it can be written as 4709*83, using all its digits and the basic arithmetic operations.

2³⁹⁰⁸⁴⁷ is an apocalyptic number.

390847 is a deficient number, since it is larger than the sum of its proper divisors (29489).

390847 is a wasteful number, since it uses less digits than its factorization.

390847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 390847 is about 625.1775747738. The cubic root of 390847 is about 73.1142889808.

The spelling of 390847 in words is "three hundred ninety thousand, eight hundred forty-seven".