84499489 has 2 divisors, whose sum is σ = 84499490. Its totient is φ = 84499488.

The previous prime is 84499487. The next prime is 84499501. The reversal of 84499489 is 98499448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77739489 + 6760000 = 8817^2 + 2600^2 .

It is a cyclic number.

It is not a de Polignac number, because 84499489 - 2¹ = 84499487 is a prime.

It is a super-2 number, since 2×84499489² = 14280327282522242, which contains 22 as substring.

Together with 84499487, 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 (84499487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42249744 + 42249745.

It is an arithmetic number, because the mean of its divisors is an integer number (42249745).

Almost surely, 2^84499489 is an apocalyptic number.

It is an amenable number.

84499489 is a deficient number, since it is larger than the sum of its proper divisors (1).

84499489 is an equidigital number, since it uses as much as digits as its factorization.

84499489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2985984, while the sum is 55.

The square root of 84499489 is about 9192.3603606473. The cubic root of 84499489 is about 438.8182632022.

The spelling of 84499489 in words is "eighty-four million, four hundred ninety-nine thousand, four hundred eighty-nine".