423434139498 has 96 divisors (see below), whose sum is σ = 982924113600. Its totient is φ = 131338741248.

The previous prime is 423434139497. The next prime is 423434139547. The reversal of 423434139498 is 894931434324.

423434139498 is a `hidden beast` number, since 4 + 23 + 434 + 13 + 94 + 98 = 666.

It is not an unprimeable number, because it can be changed into a prime (423434139493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25759090 + ... + 25775522.

It is an arithmetic number, because the mean of its divisors is an integer number (10238792850).

Almost surely, 2^423434139498 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423434139498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491462056800).

423434139498 is an abundant number, since it is smaller than the sum of its proper divisors (559489974102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423434139498 is a wasteful number, since it uses less digits than its factorization.

423434139498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17796 (or 17793 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 54.

The spelling of 423434139498 in words is "four hundred twenty-three billion, four hundred thirty-four million, one hundred thirty-nine thousand, four hundred ninety-eight".