77443996 has 12 divisors (see below), whose sum is σ = 154888048. Its totient is φ = 33190272.

The previous prime is 77443991. The next prime is 77443999. The reversal of 77443996 is 69934477.

77443996 is an admirable number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77443991) 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, 1382901 + ... + 1382956.

Almost surely, 2^77443996 is an apocalyptic number.

It is an amenable number.

77443996 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77443996 is a wasteful number, since it uses less digits than its factorization.

77443996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765868 (or 2765866 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 49.

The square root of 77443996 is about 8800.2270425257. The cubic root of 77443996 is about 426.2482261001.

The spelling of 77443996 in words is "seventy-seven million, four hundred forty-three thousand, nine hundred ninety-six".