423645788 has 6 divisors (see below), whose sum is σ = 741380136. Its totient is φ = 211822892.

The previous prime is 423645779. The next prime is 423645823. The reversal of 423645788 is 887546324.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 52955720 + ... + 52955727.

It is an arithmetic number, because the mean of its divisors is an integer number (123563356).

Almost surely, 2^423645788 is an apocalyptic number.

It is an amenable number.

423645788 is a deficient number, since it is larger than the sum of its proper divisors (317734348).

423645788 is a wasteful number, since it uses less digits than its factorization.

423645788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105911451 (or 105911449 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 47.

The square root of 423645788 is about 20582.6574571895. The cubic root of 423645788 is about 751.0478910691.

The spelling of 423645788 in words is "four hundred twenty-three million, six hundred forty-five thousand, seven hundred eighty-eight".