89896909 has 2 divisors, whose sum is σ = 89896910. Its totient is φ = 89896908.

The previous prime is 89896907. The next prime is 89896913. The reversal of 89896909 is 90969898.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54434884 + 35462025 = 7378^2 + 5955^2 .

It is a cyclic number.

It is not a de Polignac number, because 89896909 - 2¹ = 89896907 is a prime.

Together with 89896907, it forms a pair of twin primes.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89896907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44948454 + 44948455.

It is an arithmetic number, because the mean of its divisors is an integer number (44948455).

Almost surely, 2^89896909 is an apocalyptic number.

It is an amenable number.

89896909 is a deficient number, since it is larger than the sum of its proper divisors (1).

89896909 is an equidigital number, since it uses as much as digits as its factorization.

89896909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2519424, while the sum is 58.

The square root of 89896909 is about 9481.3980509205. The cubic root of 89896909 is about 447.9693009497.

The spelling of 89896909 in words is "eighty-nine million, eight hundred ninety-six thousand, nine hundred nine".