89211977 has 2 divisors, whose sum is σ = 89211978. Its totient is φ = 89211976.

The previous prime is 89211961. The next prime is 89211979. The reversal of 89211977 is 77911298.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87310336 + 1901641 = 9344^2 + 1379^2 .

It is a cyclic number.

It is not a de Polignac number, because 89211977 - 2⁴ = 89211961 is a prime.

It is a super-3 number, since 3×89211977³ (a number of 25 digits) contains 333 as substring.

Together with 89211979, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89211979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44605988 + 44605989.

It is an arithmetic number, because the mean of its divisors is an integer number (44605989).

Almost surely, 2^89211977 is an apocalyptic number.

It is an amenable number.

89211977 is a deficient number, since it is larger than the sum of its proper divisors (1).

89211977 is an equidigital number, since it uses as much as digits as its factorization.

89211977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 44.

The square root of 89211977 is about 9445.2092089059. The cubic root of 89211977 is about 446.8286941570.

The spelling of 89211977 in words is "eighty-nine million, two hundred eleven thousand, nine hundred seventy-seven".