423991909306 has 32 divisors (see below), whose sum is σ = 729552966912. Its totient is φ = 181034626560.

The previous prime is 423991909261. The next prime is 423991909373. The reversal of 423991909306 is 603909199324.

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 15 ways as a sum of consecutive naturals, for example, 4124970 + ... + 4226506.

It is an arithmetic number, because the mean of its divisors is an integer number (22798530216).

Almost surely, 2^423991909306 is an apocalyptic number.

423991909306 is a deficient number, since it is larger than the sum of its proper divisors (305561057606).

423991909306 is a wasteful number, since it uses less digits than its factorization.

423991909306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102654.

The product of its (nonzero) digits is 2834352, while the sum is 55.

The spelling of 423991909306 in words is "four hundred twenty-three billion, nine hundred ninety-one million, nine hundred nine thousand, three hundred six".