89881669 has 16 divisors (see below), whose sum is σ = 97511040. Its totient is φ = 82539520.

The previous prime is 89881667. The next prime is 89881699. The reversal of 89881669 is 96618898.

It is a cyclic number.

It is not a de Polignac number, because 89881669 - 2¹ = 89881667 is a prime.

It is a super-2 number, since 2×89881669² = 16157428844451122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89881667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136062 + ... + 136720.

It is an arithmetic number, because the mean of its divisors is an integer number (6094440).

Almost surely, 2^89881669 is an apocalyptic number.

It is an amenable number.

89881669 is a deficient number, since it is larger than the sum of its proper divisors (7629371).

89881669 is a wasteful number, since it uses less digits than its factorization.

89881669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860.

The product of its digits is 1492992, while the sum is 55.

The square root of 89881669 is about 9480.5943379094. The cubic root of 89881669 is about 447.9439851442.

The spelling of 89881669 in words is "eighty-nine million, eight hundred eighty-one thousand, six hundred sixty-nine".