390575243 has 2 divisors, whose sum is σ = 390575244. Its totient is φ = 390575242.

The previous prime is 390575201. The next prime is 390575261. The reversal of 390575243 is 342575093.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 390575243 - 2²⁴ = 373798027 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 390575197 and 390575206.

It is not a weakly prime, because it can be changed into another prime (390575743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195287621 + 195287622.

It is an arithmetic number, because the mean of its divisors is an integer number (195287622).

Almost surely, 2^390575243 is an apocalyptic number.

390575243 is a deficient number, since it is larger than the sum of its proper divisors (1).

390575243 is an equidigital number, since it uses as much as digits as its factorization.

390575243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 38.

The square root of 390575243 is about 19762.9765723688. The cubic root of 390575243 is about 730.9733952938.

The spelling of 390575243 in words is "three hundred ninety million, five hundred seventy-five thousand, two hundred forty-three".