89649867 has 4 divisors (see below), whose sum is σ = 119533160. Its totient is φ = 59766576.

The previous prime is 89649863. The next prime is 89649869. The reversal of 89649867 is 76894698.

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

It is not a de Polignac number, because 89649867 - 2² = 89649863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89649863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14941642 + ... + 14941647.

It is an arithmetic number, because the mean of its divisors is an integer number (29883290).

Almost surely, 2^89649867 is an apocalyptic number.

89649867 is a deficient number, since it is larger than the sum of its proper divisors (29883293).

89649867 is a wasteful number, since it uses less digits than its factorization.

89649867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29883292.

The product of its digits is 5225472, while the sum is 57.

The square root of 89649867 is about 9468.3613682622. The cubic root of 89649867 is about 447.5585758139.

The spelling of 89649867 in words is "eighty-nine million, six hundred forty-nine thousand, eight hundred sixty-seven".