77439632 has 10 divisors (see below), whose sum is σ = 150039318. Its totient is φ = 38719808.

The previous prime is 77439619. The next prime is 77439653. The reversal of 77439632 is 23693477.

It can be written as a sum of positive squares in only one way, i.e., 75411856 + 2027776 = 8684^2 + 1424^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77439632.

It is an unprimeable number.

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, 2419973 + ... + 2420004.

Almost surely, 2^77439632 is an apocalyptic number.

It is an amenable number.

77439632 is a deficient number, since it is larger than the sum of its proper divisors (72599686).

77439632 is a wasteful number, since it uses less digits than its factorization.

77439632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4839985 (or 4839979 counting only the distinct ones).

The product of its digits is 190512, while the sum is 41.

The square root of 77439632 is about 8799.9790908843. The cubic root of 77439632 is about 426.2402195306.

The spelling of 77439632 in words is "seventy-seven million, four hundred thirty-nine thousand, six hundred thirty-two".