423553919 has 2 divisors, whose sum is σ = 423553920. Its totient is φ = 423553918.

The previous prime is 423553891. The next prime is 423553939. The reversal of 423553919 is 919355324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423553919 - 2¹² = 423549823 is a prime.

It is a super-2 number, since 2×423553919² = 358795844600517122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423553939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211776959 + 211776960.

It is an arithmetic number, because the mean of its divisors is an integer number (211776960).

Almost surely, 2^423553919 is an apocalyptic number.

423553919 is a deficient number, since it is larger than the sum of its proper divisors (1).

423553919 is an equidigital number, since it uses as much as digits as its factorization.

423553919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 41.

The square root of 423553919 is about 20580.4256272799. The cubic root of 423553919 is about 750.9935980655.

The spelling of 423553919 in words is "four hundred twenty-three million, five hundred fifty-three thousand, nine hundred nineteen".