82091449 has 16 divisors (see below), whose sum is σ = 91065024. Its totient is φ = 73382400.

The previous prime is 82091417. The next prime is 82091483. The reversal of 82091449 is 94419028.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 82091449 - 2⁵ = 82091417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82092449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262117 + ... + 262429.

It is an arithmetic number, because the mean of its divisors is an integer number (5691564).

Almost surely, 2^82091449 is an apocalyptic number.

It is an amenable number.

82091449 is a deficient number, since it is larger than the sum of its proper divisors (8973575).

82091449 is a wasteful number, since it uses less digits than its factorization.

82091449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 82091449 is about 9060.4331574158. The cubic root of 82091449 is about 434.6095920263.

The spelling of 82091449 in words is "eighty-two million, ninety-one thousand, four hundred forty-nine".