423263279 has 2 divisors, whose sum is σ = 423263280. Its totient is φ = 423263278.

The previous prime is 423263261. The next prime is 423263287. The reversal of 423263279 is 972362324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423263279 - 2¹⁶ = 423197743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423263299) 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, 211631639 + 211631640.

It is an arithmetic number, because the mean of its divisors is an integer number (211631640).

Almost surely, 2^423263279 is an apocalyptic number.

423263279 is a deficient number, since it is larger than the sum of its proper divisors (1).

423263279 is an equidigital number, since it uses as much as digits as its factorization.

423263279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 38.

The square root of 423263279 is about 20573.3633370920. The cubic root of 423263279 is about 750.8217830864.

The spelling of 423263279 in words is "four hundred twenty-three million, two hundred sixty-three thousand, two hundred seventy-nine".