390833 has 4 divisors (see below), whose sum is σ = 404340. Its totient is φ = 377328.

The previous prime is 390829. The next prime is 390851. The reversal of 390833 is 338093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 338093 = 7 ⋅48299.

It can be written as a sum of positive squares in 2 ways, for example, as 237169 + 153664 = 487^2 + 392^2 .

It is a cyclic number.

It is not a de Polignac number, because 390833 - 2² = 390829 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390883) 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, 6710 + ... + 6767.

It is an arithmetic number, because the mean of its divisors is an integer number (101085).

2³⁹⁰⁸³³ is an apocalyptic number.

It is an amenable number.

390833 is a deficient number, since it is larger than the sum of its proper divisors (13507).

390833 is a wasteful number, since it uses less digits than its factorization.

390833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13506.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 390833 is about 625.1663778547. The cubic root of 390833 is about 73.1134159944.

The spelling of 390833 in words is "three hundred ninety thousand, eight hundred thirty-three".