423440845387 has 16 divisors (see below), whose sum is σ = 484708736512. Its totient is φ = 362367276480.

The previous prime is 423440845367. The next prime is 423440845409. The reversal of 423440845387 is 783548044324.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423440845387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423440845337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34807768 + ... + 34819930.

It is an arithmetic number, because the mean of its divisors is an integer number (30294296032).

Almost surely, 2^423440845387 is an apocalyptic number.

423440845387 is a deficient number, since it is larger than the sum of its proper divisors (61267891125).

423440845387 is a wasteful number, since it uses less digits than its factorization.

423440845387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19738.

The product of its (nonzero) digits is 10321920, while the sum is 52.

The spelling of 423440845387 in words is "four hundred twenty-three billion, four hundred forty million, eight hundred forty-five thousand, three hundred eighty-seven".