89809906 has 4 divisors (see below), whose sum is σ = 134714862. Its totient is φ = 44904952.

The previous prime is 89809891. The next prime is 89809921. The reversal of 89809906 is 60990898.

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

It is an interprime number because it is at equal distance from previous prime (89809891) and next prime (89809921).

It can be written as a sum of positive squares in only one way, i.e., 52490025 + 37319881 = 7245^2 + 6109^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 89809906.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22452475 + ... + 22452478.

Almost surely, 2^89809906 is an apocalyptic number.

89809906 is a deficient number, since it is larger than the sum of its proper divisors (44904956).

89809906 is a wasteful number, since it uses less digits than its factorization.

89809906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44904955.

The product of its (nonzero) digits is 279936, while the sum is 49.

The square root of 89809906 is about 9476.8088510848. The cubic root of 89809906 is about 447.8247381253.

The spelling of 89809906 in words is "eighty-nine million, eight hundred nine thousand, nine hundred six".