80963447 has 4 divisors (see below), whose sum is σ = 83755320. Its totient is φ = 78171576.

The previous prime is 80963423. The next prime is 80963461. The reversal of 80963447 is 74436908.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80963447 - 2¹⁰ = 80962423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80963417) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1395893 + ... + 1395950.

It is an arithmetic number, because the mean of its divisors is an integer number (20938830).

Almost surely, 2^80963447 is an apocalyptic number.

80963447 is a deficient number, since it is larger than the sum of its proper divisors (2791873).

80963447 is a wasteful number, since it uses less digits than its factorization.

80963447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791872.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 80963447 is about 8997.9690486243. The cubic root of 80963447 is about 432.6097766717.

The spelling of 80963447 in words is "eighty million, nine hundred sixty-three thousand, four hundred forty-seven".