423666386 has 32 divisors (see below), whose sum is σ = 748089216. Its totient is φ = 177408000.

The previous prime is 423666293. The next prime is 423666431. The reversal of 423666386 is 683666324.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182171 + ... + 184481.

It is an arithmetic number, because the mean of its divisors is an integer number (23377788).

Almost surely, 2^423666386 is an apocalyptic number.

423666386 is a deficient number, since it is larger than the sum of its proper divisors (324422830).

423666386 is a wasteful number, since it uses less digits than its factorization.

423666386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2978.

The product of its digits is 746496, while the sum is 44.

The square root of 423666386 is about 20583.1578238131. The cubic root of 423666386 is about 751.0600630566.

The spelling of 423666386 in words is "four hundred twenty-three million, six hundred sixty-six thousand, three hundred eighty-six".