89894309 has 2 divisors, whose sum is σ = 89894310. Its totient is φ = 89894308.

The previous prime is 89894303. The next prime is 89894323. The reversal of 89894309 is 90349898.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50481025 + 39413284 = 7105^2 + 6278^2 .

It is a cyclic number.

It is not a de Polignac number, because 89894309 - 2⁴ = 89894293 is a prime.

It is a Sophie Germain prime.

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

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89894303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44947154 + 44947155.

It is an arithmetic number, because the mean of its divisors is an integer number (44947155).

Almost surely, 2^89894309 is an apocalyptic number.

It is an amenable number.

89894309 is a deficient number, since it is larger than the sum of its proper divisors (1).

89894309 is an equidigital number, since it uses as much as digits as its factorization.

89894309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 89894309 is about 9481.2609393477. The cubic root of 89894309 is about 447.9649821827.

The spelling of 89894309 in words is "eighty-nine million, eight hundred ninety-four thousand, three hundred nine".