89645519 has 4 divisors (see below), whose sum is σ = 89668200. Its totient is φ = 89622840.

The previous prime is 89645509. The next prime is 89645537. The reversal of 89645519 is 91554698.

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: 91554698 = 2 ⋅45777349.

It is a cyclic number.

It is not a de Polignac number, because 89645519 - 2¹⁶ = 89579983 is a prime.

It is a super-2 number, since 2×89645519² = 16072638153558722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89645509) 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 3 ways as a sum of consecutive naturals, for example, 3692 + ... + 13889.

It is an arithmetic number, because the mean of its divisors is an integer number (22417050).

Almost surely, 2^89645519 is an apocalyptic number.

89645519 is a deficient number, since it is larger than the sum of its proper divisors (22681).

89645519 is a wasteful number, since it uses less digits than its factorization.

89645519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22680.

The product of its digits is 388800, while the sum is 47.

The square root of 89645519 is about 9468.1317586945. The cubic root of 89645519 is about 447.5513401975.

The spelling of 89645519 in words is "eighty-nine million, six hundred forty-five thousand, five hundred nineteen".