427797823 has 2 divisors, whose sum is σ = 427797824. Its totient is φ = 427797822.

The previous prime is 427797793. The next prime is 427797827. The reversal of 427797823 is 328797724.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427797823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427797827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213898911 + 213898912.

It is an arithmetic number, because the mean of its divisors is an integer number (213898912).

Almost surely, 2^427797823 is an apocalyptic number.

427797823 is a deficient number, since it is larger than the sum of its proper divisors (1).

427797823 is an equidigital number, since it uses as much as digits as its factorization.

427797823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1185408, while the sum is 49.

The square root of 427797823 is about 20683.2739913197. The cubic root of 427797823 is about 753.4935228347.

Subtracting from 427797823 its reverse (328797724), we obtain a palindrome (99000099).

The spelling of 427797823 in words is "four hundred twenty-seven million, seven hundred ninety-seven thousand, eight hundred twenty-three".