84637249 has 2 divisors, whose sum is σ = 84637250. Its totient is φ = 84637248.

The previous prime is 84637207. The next prime is 84637277. The reversal of 84637249 is 94273648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55130625 + 29506624 = 7425^2 + 5432^2 .

It is a cyclic number.

It is not a de Polignac number, because 84637249 - 2¹³ = 84629057 is a prime.

It is not a weakly prime, because it can be changed into another prime (84637349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42318624 + 42318625.

It is an arithmetic number, because the mean of its divisors is an integer number (42318625).

Almost surely, 2^84637249 is an apocalyptic number.

It is an amenable number.

84637249 is a deficient number, since it is larger than the sum of its proper divisors (1).

84637249 is an equidigital number, since it uses as much as digits as its factorization.

84637249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 43.

The square root of 84637249 is about 9199.8504879156. The cubic root of 84637249 is about 439.0566030346.

The spelling of 84637249 in words is "eighty-four million, six hundred thirty-seven thousand, two hundred forty-nine".