89787169 has 4 divisors (see below), whose sum is σ = 91127344. Its totient is φ = 88446996.

The previous prime is 89787151. The next prime is 89787199. The reversal of 89787169 is 96178798.

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 89787169 - 2²¹ = 87690017 is a prime.

It is a super-2 number, since 2×89787169² = 16123471434069122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89787109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 669987 + ... + 670120.

It is an arithmetic number, because the mean of its divisors is an integer number (22781836).

Almost surely, 2^89787169 is an apocalyptic number.

It is an amenable number.

89787169 is a deficient number, since it is larger than the sum of its proper divisors (1340175).

89787169 is a wasteful number, since it uses less digits than its factorization.

89787169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340174.

The product of its digits is 1524096, while the sum is 55.

The square root of 89787169 is about 9475.6091624760. The cubic root of 89787169 is about 447.7869432950.

The spelling of 89787169 in words is "eighty-nine million, seven hundred eighty-seven thousand, one hundred sixty-nine".