77996443 has 8 divisors (see below), whose sum is σ = 90821088. Its totient is φ = 65592384.

The previous prime is 77996419. The next prime is 77996461. The reversal of 77996443 is 34469977.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77996443 - 2²⁵ = 44442011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77996143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104746 + ... + 105487.

It is an arithmetic number, because the mean of its divisors is an integer number (11352636).

Almost surely, 2^77996443 is an apocalyptic number.

77996443 is a deficient number, since it is larger than the sum of its proper divisors (12824645).

77996443 is a wasteful number, since it uses less digits than its factorization.

77996443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210293.

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

The square root of 77996443 is about 8831.5594885615. The cubic root of 77996443 is about 427.2593732647.

The spelling of 77996443 in words is "seventy-seven million, nine hundred ninety-six thousand, four hundred forty-three".