419520823 has 2 divisors, whose sum is σ = 419520824. Its totient is φ = 419520822.

The previous prime is 419520809. The next prime is 419520841. The reversal of 419520823 is 328025914.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-419520823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (419520863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209760411 + 209760412.

It is an arithmetic number, because the mean of its divisors is an integer number (209760412).

Almost surely, 2^419520823 is an apocalyptic number.

419520823 is a deficient number, since it is larger than the sum of its proper divisors (1).

419520823 is an equidigital number, since it uses as much as digits as its factorization.

419520823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 419520823 is about 20482.2074738052. The cubic root of 419520823 is about 748.6023291209.

The spelling of 419520823 in words is "four hundred nineteen million, five hundred twenty thousand, eight hundred twenty-three".