78582449 has 16 divisors (see below), whose sum is σ = 92710656. Its totient is φ = 65798400.

The previous prime is 78582443. The next prime is 78582479. The reversal of 78582449 is 94428587.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 78582449 - 2⁴ = 78582433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (78582443) 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 15 ways as a sum of consecutive naturals, for example, 4319 + ... + 13259.

It is an arithmetic number, because the mean of its divisors is an integer number (5794416).

Almost surely, 2^78582449 is an apocalyptic number.

It is an amenable number.

78582449 is a deficient number, since it is larger than the sum of its proper divisors (14128207).

78582449 is a wasteful number, since it uses less digits than its factorization.

78582449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9016.

The product of its digits is 645120, while the sum is 47.

The square root of 78582449 is about 8864.6742184922. The cubic root of 78582449 is about 428.3267386665.

The spelling of 78582449 in words is "seventy-eight million, five hundred eighty-two thousand, four hundred forty-nine".