390651227 has 2 divisors, whose sum is σ = 390651228. Its totient is φ = 390651226.

The previous prime is 390651223. The next prime is 390651271. The reversal of 390651227 is 722156093.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 390651227 - 2² = 390651223 is a prime.

It is not a weakly prime, because it can be changed into another prime (390651221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195325613 + 195325614.

It is an arithmetic number, because the mean of its divisors is an integer number (195325614).

Almost surely, 2^390651227 is an apocalyptic number.

390651227 is a deficient number, since it is larger than the sum of its proper divisors (1).

390651227 is an equidigital number, since it uses as much as digits as its factorization.

390651227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 390651227 is about 19764.8988613653. The cubic root of 390651227 is about 731.0207943392.

The spelling of 390651227 in words is "three hundred ninety million, six hundred fifty-one thousand, two hundred twenty-seven".