82408491 has 48 divisors (see below), whose sum is σ = 138003840. Its totient is φ = 46863360.

The previous prime is 82408489. The next prime is 82408523. The reversal of 82408491 is 19480428.

It is not a de Polignac number, because 82408491 - 2¹ = 82408489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82408411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 362920 + ... + 363146.

It is an arithmetic number, because the mean of its divisors is an integer number (2875080).

Almost surely, 2^82408491 is an apocalyptic number.

82408491 is a deficient number, since it is larger than the sum of its proper divisors (55595349).

82408491 is a wasteful number, since it uses less digits than its factorization.

82408491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 453 counting only the distinct ones).

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

The square root of 82408491 is about 9077.9122599858. The cubic root of 82408491 is about 435.1683692268.

The spelling of 82408491 in words is "eighty-two million, four hundred eight thousand, four hundred ninety-one".