423846940247 has 4 divisors (see below), whose sum is σ = 423937957776. Its totient is φ = 423755922720.

The previous prime is 423846940217. The next prime is 423846940249. The reversal of 423846940247 is 742049648324.

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

It is a cyclic number.

It is not a de Polignac number, because 423846940247 - 2¹² = 423846936151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423846940249) by changing a digit.

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, 45501779 + ... + 45511092.

It is an arithmetic number, because the mean of its divisors is an integer number (105984489444).

Almost surely, 2^423846940247 is an apocalyptic number.

423846940247 is a deficient number, since it is larger than the sum of its proper divisors (91017529).

423846940247 is an equidigital number, since it uses as much as digits as its factorization.

423846940247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91017528.

The product of its (nonzero) digits is 9289728, while the sum is 53.

The spelling of 423846940247 in words is "four hundred twenty-three billion, eight hundred forty-six million, nine hundred forty thousand, two hundred forty-seven".