89727493 has 4 divisors (see below), whose sum is σ = 89808940. Its totient is φ = 89646048.

The previous prime is 89727487. The next prime is 89727503. The reversal of 89727493 is 39472798.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39472798 = 2 ⋅19736399.

It can be written as a sum of positive squares in 2 ways, for example, as 35307364 + 54420129 = 5942^2 + 7377^2 .

It is a cyclic number.

It is not a de Polignac number, because 89727493 - 2⁵ = 89727461 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 (89727403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39048 + ... + 41281.

It is an arithmetic number, because the mean of its divisors is an integer number (22452235).

Almost surely, 2^89727493 is an apocalyptic number.

It is an amenable number.

89727493 is a deficient number, since it is larger than the sum of its proper divisors (81447).

89727493 is a wasteful number, since it uses less digits than its factorization.

89727493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81446.

The product of its digits is 762048, while the sum is 49.

The square root of 89727493 is about 9472.4597122395. The cubic root of 89727493 is about 447.6877158431.

The spelling of 89727493 in words is "eighty-nine million, seven hundred twenty-seven thousand, four hundred ninety-three".