189469898 has 4 divisors (see below), whose sum is σ = 284204850. Its totient is φ = 94734948.

The previous prime is 189469877. The next prime is 189469937. The reversal of 189469898 is 898964981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 189420169 + 49729 = 13763^2 + 223^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 189469898.

It is an unprimeable number.

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, 47367473 + ... + 47367476.

Almost surely, 2^189469898 is an apocalyptic number.

189469898 is a deficient number, since it is larger than the sum of its proper divisors (94734952).

189469898 is an equidigital number, since it uses as much as digits as its factorization.

189469898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94734951.

The product of its digits is 8957952, while the sum is 62.

The square root of 189469898 is about 13764.8065006378. The cubic root of 189469898 is about 574.3545604510.

The spelling of 189469898 in words is "one hundred eighty-nine million, four hundred sixty-nine thousand, eight hundred ninety-eight".