77455432 has 8 divisors (see below), whose sum is σ = 145228950. Its totient is φ = 38727712.

The previous prime is 77455397. The next prime is 77455439. The reversal of 77455432 is 23455477.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 68128516 + 9326916 = 8254^2 + 3054^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 77455391 and 77455400.

It is not an unprimeable number, because it can be changed into a prime (77455439) 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 as a sum of consecutive naturals, namely, 4840957 + ... + 4840972.

Almost surely, 2^77455432 is an apocalyptic number.

It is an amenable number.

77455432 is a deficient number, since it is larger than the sum of its proper divisors (67773518).

77455432 is a wasteful number, since it uses less digits than its factorization.

77455432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9681935 (or 9681931 counting only the distinct ones).

The product of its digits is 117600, while the sum is 37.

The square root of 77455432 is about 8800.8767745038. The cubic root of 77455432 is about 426.2692061418.

The spelling of 77455432 in words is "seventy-seven million, four hundred fifty-five thousand, four hundred thirty-two".