89447897 has 32 divisors (see below), whose sum is σ = 123254784. Its totient is φ = 62726400.

The previous prime is 89447893. The next prime is 89447903. The reversal of 89447897 is 79874498.

It is not a de Polignac number, because 89447897 - 2² = 89447893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89447893) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28622 + ... + 31592.

It is an arithmetic number, because the mean of its divisors is an integer number (3851712).

Almost surely, 2^89447897 is an apocalyptic number.

It is an amenable number.

89447897 is a deficient number, since it is larger than the sum of its proper divisors (33806887).

89447897 is a wasteful number, since it uses less digits than its factorization.

89447897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3029.

The product of its digits is 4064256, while the sum is 56.

The square root of 89447897 is about 9457.6898342037. The cubic root of 89447897 is about 447.2222251668. Note that the first 5 decimals are identical.

The spelling of 89447897 in words is "eighty-nine million, four hundred forty-seven thousand, eight hundred ninety-seven".