78844801 has 16 divisors (see below), whose sum is σ = 91759360. Its totient is φ = 66355200.

The previous prime is 78844789. The next prime is 78844807. The reversal of 78844801 is 10844887.

It is a 4-Lehmer number, since φ(78844801) divides (78844801-1)⁴.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78844801 is a prime.

It is a deceptive number, since it divides R_78844800.

It is not an unprimeable number, because it can be changed into a prime (78844807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102145 + ... + 102913.

It is an arithmetic number, because the mean of its divisors is an integer number (5734960).

It is a Poulet number, since it divides 2^78844800-1.

Almost surely, 2^78844801 is an apocalyptic number.

It is an amenable number.

78844801 is a deficient number, since it is larger than the sum of its proper divisors (12914559).

78844801 is a wasteful number, since it uses less digits than its factorization.

78844801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024.

The product of its (nonzero) digits is 57344, while the sum is 40.

The square root of 78844801 is about 8879.4594993164. The cubic root of 78844801 is about 428.8028736285.

The spelling of 78844801 in words is "seventy-eight million, eight hundred forty-four thousand, eight hundred one".