84207649 has 2 divisors, whose sum is σ = 84207650. Its totient is φ = 84207648.

The previous prime is 84207611. The next prime is 84207653. The reversal of 84207649 is 94670248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42837025 + 41370624 = 6545^2 + 6432^2 .

It is a cyclic number.

It is not a de Polignac number, because 84207649 - 2⁷ = 84207521 is a prime.

It is not a weakly prime, because it can be changed into another prime (84207689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42103824 + 42103825.

It is an arithmetic number, because the mean of its divisors is an integer number (42103825).

Almost surely, 2^84207649 is an apocalyptic number.

It is an amenable number.

84207649 is a deficient number, since it is larger than the sum of its proper divisors (1).

84207649 is an equidigital number, since it uses as much as digits as its factorization.

84207649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 84207649 is about 9176.4725793738. The cubic root of 84207649 is about 438.3124911498.

The spelling of 84207649 in words is "eighty-four million, two hundred seven thousand, six hundred forty-nine".