390450427 has 2 divisors, whose sum is σ = 390450428. Its totient is φ = 390450426.

The previous prime is 390450419. The next prime is 390450439. The reversal of 390450427 is 724054093.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 390450427 - 2³ = 390450419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 390450392 and 390450401.

It is not a weakly prime, because it can be changed into another prime (390450457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195225213 + 195225214.

It is an arithmetic number, because the mean of its divisors is an integer number (195225214).

Almost surely, 2^390450427 is an apocalyptic number.

390450427 is a deficient number, since it is larger than the sum of its proper divisors (1).

390450427 is an equidigital number, since it uses as much as digits as its factorization.

390450427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 390450427 is about 19759.8184961300. The cubic root of 390450427 is about 730.8955213565.

The spelling of 390450427 in words is "three hundred ninety million, four hundred fifty thousand, four hundred twenty-seven".