89644961 has 24 divisors (see below), whose sum is σ = 115240320. Its totient is φ = 69159552.

The previous prime is 89644957. The next prime is 89644993. The reversal of 89644961 is 16944698.

It is a happy number.

It is not a de Polignac number, because 89644961 - 2² = 89644957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89644931) 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 23 ways as a sum of consecutive naturals, for example, 16820 + ... + 21498.

It is an arithmetic number, because the mean of its divisors is an integer number (4801680).

Almost surely, 2^89644961 is an apocalyptic number.

It is an amenable number.

89644961 is a deficient number, since it is larger than the sum of its proper divisors (25595359).

89644961 is a wasteful number, since it uses less digits than its factorization.

89644961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4733 (or 4726 counting only the distinct ones).

The product of its digits is 373248, while the sum is 47.

The square root of 89644961 is about 9468.1022913781. The cubic root of 89644961 is about 447.5504115987.

The spelling of 89644961 in words is "eighty-nine million, six hundred forty-four thousand, nine hundred sixty-one".