189906448 has 10 divisors (see below), whose sum is σ = 367943774. Its totient is φ = 94953216.

The previous prime is 189906443. The next prime is 189906511. The reversal of 189906448 is 844609981.

It can be written as a sum of positive squares in only one way, i.e., 110838784 + 79067664 = 10528^2 + 8892^2 .

It is not an unprimeable number, because it can be changed into a prime (189906443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5934561 + ... + 5934592.

Almost surely, 2^189906448 is an apocalyptic number.

It is an amenable number.

189906448 is a deficient number, since it is larger than the sum of its proper divisors (178037326).

189906448 is a wasteful number, since it uses less digits than its factorization.

189906448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11869161 (or 11869155 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 189906448 is about 13780.6548465594. The cubic root of 189906448 is about 574.7953378744.

The spelling of 189906448 in words is "one hundred eighty-nine million, nine hundred six thousand, four hundred forty-eight".