89658491 has 4 divisors (see below), whose sum is σ = 96555312. Its totient is φ = 82761672.

The previous prime is 89658463. The next prime is 89658497. The reversal of 89658491 is 19485698.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19485698 = 2 ⋅9742849.

It is a cyclic number.

It is not a de Polignac number, because 89658491 - 2¹⁰ = 89657467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89658497) 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 3 ways as a sum of consecutive naturals, for example, 3448391 + ... + 3448416.

It is an arithmetic number, because the mean of its divisors is an integer number (24138828).

Almost surely, 2^89658491 is an apocalyptic number.

89658491 is a deficient number, since it is larger than the sum of its proper divisors (6896821).

89658491 is a wasteful number, since it uses less digits than its factorization.

89658491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6896820.

The product of its digits is 622080, while the sum is 50.

The square root of 89658491 is about 9468.8167687415. The cubic root of 89658491 is about 447.5729265376.

The spelling of 89658491 in words is "eighty-nine million, six hundred fifty-eight thousand, four hundred ninety-one".