390893 has 2 divisors, whose sum is σ = 390894. Its totient is φ = 390892.

The previous prime is 390889. The next prime is 390953. The reversal of 390893 is 398093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228484 + 162409 = 478^2 + 403^2 .

It is a cyclic number.

It is not a de Polignac number, because 390893 - 2² = 390889 is a prime.

It is a Chen prime.

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 390893.

It is not a weakly prime, because it can be changed into another prime (390883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195446 + 195447.

It is an arithmetic number, because the mean of its divisors is an integer number (195447).

2³⁹⁰⁸⁹³ is an apocalyptic number.

It is an amenable number.

390893 is a deficient number, since it is larger than the sum of its proper divisors (1).

390893 is an equidigital number, since it uses as much as digits as its factorization.

390893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 390893 is about 625.2143632387. The cubic root of 390893 is about 73.1171572177.

The spelling of 390893 in words is "three hundred ninety thousand, eight hundred ninety-three".