83087489 has 2 divisors, whose sum is σ = 83087490. Its totient is φ = 83087488.

The previous prime is 83087479. The next prime is 83087491. The reversal of 83087489 is 98478038.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75342400 + 7745089 = 8680^2 + 2783^2 .

It is a cyclic number.

It is not a de Polignac number, because 83087489 - 2²⁴ = 66310273 is a prime.

Together with 83087491, 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 (83087419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41543744 + 41543745.

It is an arithmetic number, because the mean of its divisors is an integer number (41543745).

Almost surely, 2^83087489 is an apocalyptic number.

It is an amenable number.

83087489 is a deficient number, since it is larger than the sum of its proper divisors (1).

83087489 is an equidigital number, since it uses as much as digits as its factorization.

83087489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 83087489 is about 9115.2338971636. The cubic root of 83087489 is about 436.3602796709.

The spelling of 83087489 in words is "eighty-three million, eighty-seven thousand, four hundred eighty-nine".