390633 has 4 divisors (see below), whose sum is σ = 520848. Its totient is φ = 260420.

The previous prime is 390581. The next prime is 390647. The reversal of 390633 is 336093.

390633 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 336093 = 3 ⋅112031.

It is a cyclic number.

It is not a de Polignac number, because 390633 - 2¹² = 386537 is a prime.

It is a D-number.

390633 is strictly pandigital in base 7.

It is not an unprimeable number, because it can be changed into a prime (390653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65103 + ... + 65108.

It is an arithmetic number, because the mean of its divisors is an integer number (130212).

2³⁹⁰⁶³³ is an apocalyptic number.

It is an amenable number.

390633 is a deficient number, since it is larger than the sum of its proper divisors (130215).

390633 is a wasteful number, since it uses less digits than its factorization.

390633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130214.

The product of its (nonzero) digits is 1458, while the sum is 24.

The square root of 390633 is about 625.0063999672. The cubic root of 390633 is about 73.1009424843.

The spelling of 390633 in words is "three hundred ninety thousand, six hundred thirty-three".