89511493 has 4 divisors (see below), whose sum is σ = 89534368. Its totient is φ = 89488620.

The previous prime is 89511491. The next prime is 89511517. The reversal of 89511493 is 39411598.

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: 39411598 = 2 ⋅19705799.

It is a cyclic number.

It is not a de Polignac number, because 89511493 - 2¹ = 89511491 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 (89511491) 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, 3921 + ... + 13942.

It is an arithmetic number, because the mean of its divisors is an integer number (22383592).

Almost surely, 2^89511493 is an apocalyptic number.

It is an amenable number.

89511493 is a deficient number, since it is larger than the sum of its proper divisors (22875).

89511493 is a wasteful number, since it uses less digits than its factorization.

89511493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22874.

The product of its digits is 38880, while the sum is 40.

The square root of 89511493 is about 9461.0513686376. The cubic root of 89511493 is about 447.3281893007.

The spelling of 89511493 in words is "eighty-nine million, five hundred eleven thousand, four hundred ninety-three".