82447149 has 8 divisors (see below), whose sum is σ = 111435712. Its totient is φ = 54211680.

The previous prime is 82447121. The next prime is 82447151. The reversal of 82447149 is 94174428.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82447149 - 2⁷ = 82447021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82447109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188017 + ... + 188454.

It is an arithmetic number, because the mean of its divisors is an integer number (13929464).

Almost surely, 2^82447149 is an apocalyptic number.

It is an amenable number.

82447149 is a deficient number, since it is larger than the sum of its proper divisors (28988563).

82447149 is a wasteful number, since it uses less digits than its factorization.

82447149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376547.

The product of its digits is 64512, while the sum is 39.

The square root of 82447149 is about 9080.0412443997. The cubic root of 82447149 is about 435.2364047281.

The spelling of 82447149 in words is "eighty-two million, four hundred forty-seven thousand, one hundred forty-nine".