424999823 has 4 divisors (see below), whose sum is σ = 430985808. Its totient is φ = 419013840.

The previous prime is 424999811. The next prime is 424999837. The reversal of 424999823 is 328999424.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 424999823 - 2¹⁸ = 424737679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424999853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2992886 + ... + 2993027.

It is an arithmetic number, because the mean of its divisors is an integer number (107746452).

Almost surely, 2^424999823 is an apocalyptic number.

424999823 is a deficient number, since it is larger than the sum of its proper divisors (5985985).

424999823 is an equidigital number, since it uses as much as digits as its factorization.

424999823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5985984.

The product of its digits is 1119744, while the sum is 50.

The square root of 424999823 is about 20615.5238352073. The cubic root of 424999823 is about 751.8471937284.

The spelling of 424999823 in words is "four hundred twenty-four million, nine hundred ninety-nine thousand, eight hundred twenty-three".