427298909 has 2 divisors, whose sum is σ = 427298910. Its totient is φ = 427298908.

The previous prime is 427298887. The next prime is 427298939. The reversal of 427298909 is 909892724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 424236409 + 3062500 = 20597^2 + 1750^2 .

It is a cyclic number.

It is not a de Polignac number, because 427298909 - 2⁸ = 427298653 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 (427298939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213649454 + 213649455.

It is an arithmetic number, because the mean of its divisors is an integer number (213649455).

Almost surely, 2^427298909 is an apocalyptic number.

It is an amenable number.

427298909 is a deficient number, since it is larger than the sum of its proper divisors (1).

427298909 is an equidigital number, since it uses as much as digits as its factorization.

427298909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 427298909 is about 20671.2096646519. The cubic root of 427298909 is about 753.2004913428.

The spelling of 427298909 in words is "four hundred twenty-seven million, two hundred ninety-eight thousand, nine hundred nine".