423433646 has 4 divisors (see below), whose sum is σ = 635150472. Its totient is φ = 211716822.

The previous prime is 423433631. The next prime is 423433649. The reversal of 423433646 is 646334324.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423433649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105858410 + ... + 105858413.

It is an arithmetic number, because the mean of its divisors is an integer number (158787618).

Almost surely, 2^423433646 is an apocalyptic number.

423433646 is a deficient number, since it is larger than the sum of its proper divisors (211716826).

423433646 is a wasteful number, since it uses less digits than its factorization.

423433646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211716825.

The product of its digits is 124416, while the sum is 35.

The square root of 423433646 is about 20577.5033956989. The cubic root of 423433646 is about 750.9225069168.

The spelling of 423433646 in words is "four hundred twenty-three million, four hundred thirty-three thousand, six hundred forty-six".