189421712 has 10 divisors (see below), whose sum is σ = 367004598. Its totient is φ = 94710848.

The previous prime is 189421711. The next prime is 189421717. The reversal of 189421712 is 217124981.

It can be written as a sum of positive squares in only one way, i.e., 188897536 + 524176 = 13744^2 + 724^2 .

It is not an unprimeable number, because it can be changed into a prime (189421711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5919413 + ... + 5919444.

Almost surely, 2^189421712 is an apocalyptic number.

It is an amenable number.

189421712 is a deficient number, since it is larger than the sum of its proper divisors (177582886).

189421712 is a wasteful number, since it uses less digits than its factorization.

189421712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11838865 (or 11838859 counting only the distinct ones).

The product of its digits is 8064, while the sum is 35.

The square root of 189421712 is about 13763.0560559783. The cubic root of 189421712 is about 574.3058663565.

The spelling of 189421712 in words is "one hundred eighty-nine million, four hundred twenty-one thousand, seven hundred twelve".