89778493 has 8 divisors (see below), whose sum is σ = 102687488. Its totient is φ = 76890384.

The previous prime is 89778487. The next prime is 89778497. The reversal of 89778493 is 39487798.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89778493 - 2²⁵ = 56224061 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 (89778497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5455 + ... + 14467.

It is an arithmetic number, because the mean of its divisors is an integer number (12835936).

Almost surely, 2^89778493 is an apocalyptic number.

It is an amenable number.

89778493 is a deficient number, since it is larger than the sum of its proper divisors (12908995).

89778493 is a wasteful number, since it uses less digits than its factorization.

89778493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10443.

The product of its digits is 3048192, while the sum is 55.

The square root of 89778493 is about 9475.1513444377. The cubic root of 89778493 is about 447.7725198360.

The spelling of 89778493 in words is "eighty-nine million, seven hundred seventy-eight thousand, four hundred ninety-three".