423344919 has 4 divisors (see below), whose sum is σ = 564459896. Its totient is φ = 282229944.

The previous prime is 423344893. The next prime is 423344939. The reversal of 423344919 is 919443324.

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

It is not a de Polignac number, because 423344919 - 2⁷ = 423344791 is a prime.

It is a super-2 number, since 2×423344919² = 358441840886233122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423344939) 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, 70557484 + ... + 70557489.

It is an arithmetic number, because the mean of its divisors is an integer number (141114974).

Almost surely, 2^423344919 is an apocalyptic number.

423344919 is a deficient number, since it is larger than the sum of its proper divisors (141114977).

423344919 is a wasteful number, since it uses less digits than its factorization.

423344919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141114976.

The product of its digits is 93312, while the sum is 39.

The square root of 423344919 is about 20575.3473603728. The cubic root of 423344919 is about 750.8700533969.

The spelling of 423344919 in words is "four hundred twenty-three million, three hundred forty-four thousand, nine hundred nineteen".