423443689394 has 8 divisors (see below), whose sum is σ = 692907855408. Its totient is φ = 192474404260.

The previous prime is 423443689307. The next prime is 423443689429. The reversal of 423443689394 is 493986344324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9623720192 + ... + 9623720235.

It is an arithmetic number, because the mean of its divisors is an integer number (86613481926).

Almost surely, 2^423443689394 is an apocalyptic number.

423443689394 is a deficient number, since it is larger than the sum of its proper divisors (269464166014).

423443689394 is a wasteful number, since it uses less digits than its factorization.

423443689394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19247440440.

The product of its digits is 53747712, while the sum is 59.

The spelling of 423443689394 in words is "four hundred twenty-three billion, four hundred forty-three million, six hundred eighty-nine thousand, three hundred ninety-four".