427418779 has 2 divisors, whose sum is σ = 427418780. Its totient is φ = 427418778.

The previous prime is 427418773. The next prime is 427418861. The reversal of 427418779 is 977814724.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 427418779 - 2¹⁹ = 426894491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (427418773) 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, 213709389 + 213709390.

It is an arithmetic number, because the mean of its divisors is an integer number (213709390).

Almost surely, 2^427418779 is an apocalyptic number.

427418779 is a deficient number, since it is larger than the sum of its proper divisors (1).

427418779 is an equidigital number, since it uses as much as digits as its factorization.

427418779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 790272, while the sum is 49.

The square root of 427418779 is about 20674.1089046179. The cubic root of 427418779 is about 753.2709164400.

The spelling of 427418779 in words is "four hundred twenty-seven million, four hundred eighteen thousand, seven hundred seventy-nine".