89819849 has 4 divisors (see below), whose sum is σ = 102651264. Its totient is φ = 76988436.

The previous prime is 89819837. The next prime is 89819881. The reversal of 89819849 is 94891898.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94891898 = 2 ⋅47445949.

It is not a de Polignac number, because 89819849 - 2⁴ = 89819833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89819794 and 89819803.

It is not an unprimeable number, because it can be changed into a prime (89819549) 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, 6415697 + ... + 6415710.

It is an arithmetic number, because the mean of its divisors is an integer number (25662816).

Almost surely, 2^89819849 is an apocalyptic number.

It is an amenable number.

89819849 is a deficient number, since it is larger than the sum of its proper divisors (12831415).

89819849 is a wasteful number, since it uses less digits than its factorization.

89819849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12831414.

The product of its digits is 1492992, while the sum is 56.

The square root of 89819849 is about 9477.3334329863. Note that the first 3 decimals coincide. The cubic root of 89819849 is about 447.8412639826.

The spelling of 89819849 in words is "eighty-nine million, eight hundred nineteen thousand, eight hundred forty-nine".