89459991 has 32 divisors (see below), whose sum is σ = 136765440. Its totient is φ = 57758400.

The previous prime is 89459987. The next prime is 89460011. The reversal of 89459991 is 19995498.

It is not a de Polignac number, because 89459991 - 2² = 89459987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89459911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233386 + ... + 233768.

It is an arithmetic number, because the mean of its divisors is an integer number (4273920).

Almost surely, 2^89459991 is an apocalyptic number.

89459991 is a deficient number, since it is larger than the sum of its proper divisors (47305449).

89459991 is a wasteful number, since it uses less digits than its factorization.

89459991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 638 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 54.

The square root of 89459991 is about 9458.3291864895. The cubic root of 89459991 is about 447.2423801472.

The spelling of 89459991 in words is "eighty-nine million, four hundred fifty-nine thousand, nine hundred ninety-one".