423428477 has 2 divisors, whose sum is σ = 423428478. Its totient is φ = 423428476.

The previous prime is 423428437. The next prime is 423428483. The reversal of 423428477 is 774824324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 380211001 + 43217476 = 19499^2 + 6574^2 .

It is a cyclic number.

It is not a de Polignac number, because 423428477 - 2⁸ = 423428221 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 (423428437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211714238 + 211714239.

It is an arithmetic number, because the mean of its divisors is an integer number (211714239).

Almost surely, 2^423428477 is an apocalyptic number.

It is an amenable number.

423428477 is a deficient number, since it is larger than the sum of its proper divisors (1).

423428477 is an equidigital number, since it uses as much as digits as its factorization.

423428477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 301056, while the sum is 41.

The square root of 423428477 is about 20577.3777969886. The cubic root of 423428477 is about 750.9194513147.

The spelling of 423428477 in words is "four hundred twenty-three million, four hundred twenty-eight thousand, four hundred seventy-seven".