77043388 has 12 divisors (see below), whose sum is σ = 142756992. Its totient is φ = 36255680.

The previous prime is 77043383. The next prime is 77043389. The reversal of 77043388 is 88334077.

It is a self number, because there is not a number n which added to its sum of digits gives 77043388.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77043383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566428 + ... + 566563.

It is an arithmetic number, because the mean of its divisors is an integer number (11896416).

Almost surely, 2^77043388 is an apocalyptic number.

It is an amenable number.

77043388 is a deficient number, since it is larger than the sum of its proper divisors (65713604).

77043388 is a wasteful number, since it uses less digits than its factorization.

77043388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133012 (or 1133010 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 77043388 is about 8777.4362999682. The cubic root of 77043388 is about 425.5119790718.

The spelling of 77043388 in words is "seventy-seven million, forty-three thousand, three hundred eighty-eight".