390266447 has 2 divisors, whose sum is σ = 390266448. Its totient is φ = 390266446.

The previous prime is 390266419. The next prime is 390266519. The reversal of 390266447 is 744662093.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 390266447 - 2¹⁰ = 390265423 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390266647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195133223 + 195133224.

It is an arithmetic number, because the mean of its divisors is an integer number (195133224).

Almost surely, 2^390266447 is an apocalyptic number.

390266447 is a deficient number, since it is larger than the sum of its proper divisors (1).

390266447 is an equidigital number, since it uses as much as digits as its factorization.

390266447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 390266447 is about 19755.1625404602. The cubic root of 390266447 is about 730.7807041480.

The spelling of 390266447 in words is "three hundred ninety million, two hundred sixty-six thousand, four hundred forty-seven".