89898905 has 4 divisors (see below), whose sum is σ = 107878692. Its totient is φ = 71919120.

The previous prime is 89898889. The next prime is 89898911. The reversal of 89898905 is 50989898.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50989898 = 2 ⋅25494949.

It can be written as a sum of positive squares in 2 ways, for example, as 35331136 + 54567769 = 5944^2 + 7387^2 .

It is not a de Polignac number, because 89898905 - 2⁴ = 89898889 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8989886 + ... + 8989895.

It is an arithmetic number, because the mean of its divisors is an integer number (26969673).

Almost surely, 2^89898905 is an apocalyptic number.

It is an amenable number.

89898905 is a deficient number, since it is larger than the sum of its proper divisors (17979787).

89898905 is a wasteful number, since it uses less digits than its factorization.

89898905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17979786.

The product of its (nonzero) digits is 1866240, while the sum is 56.

The square root of 89898905 is about 9481.5033090750. The cubic root of 89898905 is about 447.9726163774.

The spelling of 89898905 in words is "eighty-nine million, eight hundred ninety-eight thousand, nine hundred five".