89537971 has 2 divisors, whose sum is σ = 89537972. Its totient is φ = 89537970.

The previous prime is 89537969. The next prime is 89537977. The reversal of 89537971 is 17973598.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89537971 - 2¹ = 89537969 is a prime.

Together with 89537969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (89537977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44768985 + 44768986.

It is an arithmetic number, because the mean of its divisors is an integer number (44768986).

Almost surely, 2^89537971 is an apocalyptic number.

89537971 is a deficient number, since it is larger than the sum of its proper divisors (1).

89537971 is an equidigital number, since it uses as much as digits as its factorization.

89537971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 49.

The square root of 89537971 is about 9462.4505811127. The cubic root of 89537971 is about 447.3722923453.

The spelling of 89537971 in words is "eighty-nine million, five hundred thirty-seven thousand, nine hundred seventy-one".