89581967 has 2 divisors, whose sum is σ = 89581968. Its totient is φ = 89581966.

The previous prime is 89581939. The next prime is 89581969. The reversal of 89581967 is 76918598.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89581967 - 2¹⁴ = 89565583 is a prime.

Together with 89581969, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89581969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44790983 + 44790984.

It is an arithmetic number, because the mean of its divisors is an integer number (44790984).

Almost surely, 2^89581967 is an apocalyptic number.

89581967 is a deficient number, since it is larger than the sum of its proper divisors (1).

89581967 is an equidigital number, since it uses as much as digits as its factorization.

89581967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 53.

The square root of 89581967 is about 9464.7750633599. The cubic root of 89581967 is about 447.4455550004.

The spelling of 89581967 in words is "eighty-nine million, five hundred eighty-one thousand, nine hundred sixty-seven".