83784412 has 6 divisors (see below), whose sum is σ = 146622728. Its totient is φ = 41892204.

The previous prime is 83784383. The next prime is 83784427. The reversal of 83784412 is 21448738.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10473048 + ... + 10473055.

Almost surely, 2^83784412 is an apocalyptic number.

It is an amenable number.

83784412 is a deficient number, since it is larger than the sum of its proper divisors (62838316).

83784412 is a wasteful number, since it uses less digits than its factorization.

83784412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20946107 (or 20946105 counting only the distinct ones).

The product of its digits is 43008, while the sum is 37.

The square root of 83784412 is about 9153.3825441746. The cubic root of 83784412 is about 437.5769216584.

The spelling of 83784412 in words is "eighty-three million, seven hundred eighty-four thousand, four hundred twelve".