82449081 has 24 divisors (see below), whose sum is σ = 139915776. Its totient is φ = 46124640.

The previous prime is 82449071. The next prime is 82449091. The reversal of 82449081 is 18094428.

It is an interprime number because it is at equal distance from previous prime (82449071) and next prime (82449091).

It is not a de Polignac number, because 82449081 - 2⁵ = 82449049 is a prime.

It is a super-2 number, since 2×82449081² = 13595701915489122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82449041) 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 23 ways as a sum of consecutive naturals, for example, 30745 + ... + 33318.

It is an arithmetic number, because the mean of its divisors is an integer number (5829824).

Almost surely, 2^82449081 is an apocalyptic number.

It is an amenable number.

82449081 is a deficient number, since it is larger than the sum of its proper divisors (57466695).

82449081 is a wasteful number, since it uses less digits than its factorization.

82449081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64093 (or 64090 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 82449081 is about 9080.1476309584. The cubic root of 82449081 is about 435.2398043611.

The spelling of 82449081 in words is "eighty-two million, four hundred forty-nine thousand, eighty-one".