89091919 has 8 divisors (see below), whose sum is σ = 101894048. Its totient is φ = 76308480.

The previous prime is 89091907. The next prime is 89091941. The reversal of 89091919 is 91919098.

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 89091919 - 2¹³ = 89083727 is a prime.

It is a super-2 number, since 2×89091919² = 15874740062205122, 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 (89091979) 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, 7759 + ... + 15439.

It is an arithmetic number, because the mean of its divisors is an integer number (12736756).

Almost surely, 2^89091919 is an apocalyptic number.

89091919 is a deficient number, since it is larger than the sum of its proper divisors (12802129).

89091919 is a wasteful number, since it uses less digits than its factorization.

89091919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9345.

The product of its (nonzero) digits is 52488, while the sum is 46.

The square root of 89091919 is about 9438.8515720929. The cubic root of 89091919 is about 446.6281626298.

The spelling of 89091919 in words is "eighty-nine million, ninety-one thousand, nine hundred nineteen".