89777773 has 2 divisors, whose sum is σ = 89777774. Its totient is φ = 89777772.

The previous prime is 89777747. The next prime is 89777783. The reversal of 89777773 is 37777798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52969284 + 36808489 = 7278^2 + 6067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89777773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89777713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44888886 + 44888887.

It is an arithmetic number, because the mean of its divisors is an integer number (44888887).

Almost surely, 2^89777773 is an apocalyptic number.

It is an amenable number.

89777773 is a deficient number, since it is larger than the sum of its proper divisors (1).

89777773 is an equidigital number, since it uses as much as digits as its factorization.

89777773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3630312, while the sum is 55.

The square root of 89777773 is about 9475.1133502455. The cubic root of 89777773 is about 447.7713228267.

The spelling of 89777773 in words is "eighty-nine million, seven hundred seventy-seven thousand, seven hundred seventy-three".