89786409 has 4 divisors (see below), whose sum is σ = 119715216. Its totient is φ = 59857604.

The previous prime is 89786371. The next prime is 89786443. The reversal of 89786409 is 90468798.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 89786409 - 2¹³ = 89778217 is a prime.

It is a super-2 number, since 2×89786409² = 16123198482230562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (89786009) 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, 14964399 + ... + 14964404.

It is an arithmetic number, because the mean of its divisors is an integer number (29928804).

Almost surely, 2^89786409 is an apocalyptic number.

It is an amenable number.

89786409 is a deficient number, since it is larger than the sum of its proper divisors (29928807).

89786409 is a wasteful number, since it uses less digits than its factorization.

89786409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29928806.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 89786409 is about 9475.5690594286. The cubic root of 89786409 is about 447.7856798664.

The spelling of 89786409 in words is "eighty-nine million, seven hundred eighty-six thousand, four hundred nine".