77193412 has 24 divisors (see below), whose sum is σ = 137846016. Its totient is φ = 37816128.

The previous prime is 77193383. The next prime is 77193421. The reversal of 77193412 is 21439177.

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 in 7 ways as a sum of consecutive naturals, for example, 47973 + ... + 49555.

It is an arithmetic number, because the mean of its divisors is an integer number (5743584).

Almost surely, 2^77193412 is an apocalyptic number.

It is an amenable number.

77193412 is a deficient number, since it is larger than the sum of its proper divisors (60652604).

77193412 is a wasteful number, since it uses less digits than its factorization.

77193412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827 (or 1825 counting only the distinct ones).

The product of its digits is 10584, while the sum is 34.

The square root of 77193412 is about 8785.9781470250. The cubic root of 77193412 is about 425.7879950488.

The spelling of 77193412 in words is "seventy-seven million, one hundred ninety-three thousand, four hundred twelve".