78844471 has 8 divisors (see below), whose sum is σ = 83361200. Its totient is φ = 74364480.

The previous prime is 78844429. The next prime is 78844489. The reversal of 78844471 is 17444887.

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

It is not a de Polignac number, because 78844471 - 2⁷ = 78844343 is a prime.

It is a super-3 number, since 3×78844471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78844411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4710 + ... + 13411.

It is an arithmetic number, because the mean of its divisors is an integer number (10420150).

Almost surely, 2^78844471 is an apocalyptic number.

78844471 is a deficient number, since it is larger than the sum of its proper divisors (4516729).

78844471 is a wasteful number, since it uses less digits than its factorization.

78844471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18369.

The product of its digits is 200704, while the sum is 43.

The square root of 78844471 is about 8879.4409170848. The cubic root of 78844471 is about 428.8022753851.

The spelling of 78844471 in words is "seventy-eight million, eight hundred forty-four thousand, four hundred seventy-one".