89129666 has 4 divisors (see below), whose sum is σ = 133694502. Its totient is φ = 44564832.

The previous prime is 89129659. The next prime is 89129671. The reversal of 89129666 is 66692198.

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., 80550625 + 8579041 = 8975^2 + 2929^2 .

It is a super-2 number, since 2×89129666² = 15888194722543112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 89129666.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22282415 + ... + 22282418.

Almost surely, 2^89129666 is an apocalyptic number.

89129666 is a deficient number, since it is larger than the sum of its proper divisors (44564836).

89129666 is a wasteful number, since it uses less digits than its factorization.

89129666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44564835.

The product of its digits is 279936, while the sum is 47.

The square root of 89129666 is about 9440.8509150394. The cubic root of 89129666 is about 446.6912304256.

The spelling of 89129666 in words is "eighty-nine million, one hundred twenty-nine thousand, six hundred sixty-six".