89649869922 has 18 divisors (see below), whose sum is σ = 194244137217. Its totient is φ = 29882866536.

The previous prime is 89649869921. The next prime is 89649869957. The reversal of 89649869922 is 22996894698.

It can be written as a sum of positive squares in 2 ways, for example, as 81459438921 + 8190431001 = 285411^2 + 90501^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=211719.

It is not an unprimeable number, because it can be changed into a prime (89649869921) 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 8 ways as a sum of consecutive naturals, for example, 1235028 + ... + 1305600.

Almost surely, 2^89649869922 is an apocalyptic number.

89649869922 is an abundant number, since it is smaller than the sum of its proper divisors (104594267295).

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

89649869922 is an frugal number, since it uses more digits than its factorization.

89649869922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141154 (or 70578 counting only the distinct ones).

The product of its digits is 241864704, while the sum is 72.

Multiplying 89649869922 by its sum of digits (72), we get a square (6454790634384 = 2540628²).

The spelling of 89649869922 in words is "eighty-nine billion, six hundred forty-nine million, eight hundred sixty-nine thousand, nine hundred twenty-two".