390433 has 2 divisors, whose sum is σ = 390434. Its totient is φ = 390432.

The previous prime is 390421. The next prime is 390437. The reversal of 390433 is 334093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 388129 + 2304 = 623^2 + 48^2 .

It is an emirp because it is prime and its reverse (334093) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 390433 - 2¹³ = 382241 is a prime.

It is not a weakly prime, because it can be changed into another prime (390437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195216 + 195217.

It is an arithmetic number, because the mean of its divisors is an integer number (195217).

2³⁹⁰⁴³³ is an apocalyptic number.

It is an amenable number.

390433 is a deficient number, since it is larger than the sum of its proper divisors (1).

390433 is an equidigital number, since it uses as much as digits as its factorization.

390433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 390433 is about 624.8463811210. The cubic root of 390433 is about 73.0884647159.

The spelling of 390433 in words is "three hundred ninety thousand, four hundred thirty-three".