89784797 has 2 divisors, whose sum is σ = 89784798. Its totient is φ = 89784796.

The previous prime is 89784733. The next prime is 89784853. The reversal of 89784797 is 79748798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60310756 + 29474041 = 7766^2 + 5429^2 .

It is a cyclic number.

It is not a de Polignac number, because 89784797 - 2⁶ = 89784733 is a prime.

It is a super-2 number, since 2×89784797² = 16122619544662418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89784727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44892398 + 44892399.

It is an arithmetic number, because the mean of its divisors is an integer number (44892399).

Almost surely, 2^89784797 is an apocalyptic number.

It is an amenable number.

89784797 is a deficient number, since it is larger than the sum of its proper divisors (1).

89784797 is an equidigital number, since it uses as much as digits as its factorization.

89784797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7112448, while the sum is 59.

The square root of 89784797 is about 9475.4839981924. The cubic root of 89784797 is about 447.7830000442.

The spelling of 89784797 in words is "eighty-nine million, seven hundred eighty-four thousand, seven hundred ninety-seven".