84191849 has 12 divisors (see below), whose sum is σ = 99283284. Its totient is φ = 71172864.

The previous prime is 84191827. The next prime is 84191851. The reversal of 84191849 is 94819148.

It can be written as a sum of positive squares in 2 ways, for example, as 37515625 + 46676224 = 6125^2 + 6832^2 .

It is not a de Polignac number, because 84191849 - 2⁸ = 84191593 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84191749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8192 + ... + 15345.

It is an arithmetic number, because the mean of its divisors is an integer number (8273607).

Almost surely, 2^84191849 is an apocalyptic number.

It is an amenable number.

84191849 is a deficient number, since it is larger than the sum of its proper divisors (15091435).

84191849 is a wasteful number, since it uses less digits than its factorization.

84191849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23624 (or 23617 counting only the distinct ones).

The product of its digits is 82944, while the sum is 44.

The square root of 84191849 is about 9175.6116417381. The cubic root of 84191849 is about 438.2850757047.

The spelling of 84191849 in words is "eighty-four million, one hundred ninety-one thousand, eight hundred forty-nine".