77482249 has 4 divisors (see below), whose sum is σ = 83442436. Its totient is φ = 71522064.

The previous prime is 77482219. The next prime is 77482283. The reversal of 77482249 is 94228477.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27878400 + 49603849 = 5280^2 + 7043^2 .

It is a cyclic number.

It is not a de Polignac number, because 77482249 - 2⁷ = 77482121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77482219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2980074 + ... + 2980099.

It is an arithmetic number, because the mean of its divisors is an integer number (20860609).

Almost surely, 2^77482249 is an apocalyptic number.

It is an amenable number.

77482249 is a deficient number, since it is larger than the sum of its proper divisors (5960187).

77482249 is a wasteful number, since it uses less digits than its factorization.

77482249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5960186.

The product of its digits is 225792, while the sum is 43.

The square root of 77482249 is about 8802.4001840407. The cubic root of 77482249 is about 426.3183954712.

It can be divided in two parts, 77 and 482249, that multiplied together give a palindrome (37133173).

The spelling of 77482249 in words is "seventy-seven million, four hundred eighty-two thousand, two hundred forty-nine".