89777213 has 2 divisors, whose sum is σ = 89777214. Its totient is φ = 89777212.

The previous prime is 89777197. The next prime is 89777227. The reversal of 89777213 is 31277798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77757124 + 12020089 = 8818^2 + 3467^2 .

It is a cyclic number.

It is not a de Polignac number, because 89777213 - 2⁴ = 89777197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89777263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44888606 + 44888607.

It is an arithmetic number, because the mean of its divisors is an integer number (44888607).

Almost surely, 2^89777213 is an apocalyptic number.

It is an amenable number.

89777213 is a deficient number, since it is larger than the sum of its proper divisors (1).

89777213 is an equidigital number, since it uses as much as digits as its factorization.

89777213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 44.

The square root of 89777213 is about 9475.0837991017. The cubic root of 89777213 is about 447.7703918150.

The spelling of 89777213 in words is "eighty-nine million, seven hundred seventy-seven thousand, two hundred thirteen".