423199689444 has 189 divisors, whose sum is σ = 1292430569241. Its totient is φ = 120843938880.

The previous prime is 423199689439. The next prime is 423199689481. The reversal of 423199689444 is 444986991324.

The square root of 423199689444 is 650538.

It is a perfect power (a square), and thus also a powerful number.

423199689444 is a `hidden beast` number, since 4 + 23 + 1 + 9 + 96 + 89 + 444 = 666.

It can be written as a sum of positive squares in only one way, i.e., 312550319844 + 110649369600 = 559062^2 + 332640^2 .

It is a tau number, because it is divible by the number of its divisors (189).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

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 62 ways as a sum of consecutive naturals, for example, 245902504 + ... + 245904224.

Almost surely, 2^423199689444 is an apocalyptic number.

423199689444 is the 650538-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423199689444

423199689444 is an abundant number, since it is smaller than the sum of its proper divisors (869230879797).

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

423199689444 is an frugal number, since it uses more digits than its factorization.

423199689444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3478 (or 1733 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 63.

The spelling of 423199689444 in words is "four hundred twenty-three billion, one hundred ninety-nine million, six hundred eighty-nine thousand, four hundred forty-four".