78443995 has 16 divisors (see below), whose sum is σ = 109099008. Its totient is φ = 53030880.

The previous prime is 78443971. The next prime is 78443999. The reversal of 78443995 is 59934487.

It is not a de Polignac number, because 78443995 - 2⁹ = 78443483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78443999) 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 15 ways as a sum of consecutive naturals, for example, 13299 + ... + 18268.

It is an arithmetic number, because the mean of its divisors is an integer number (6818688).

Almost surely, 2^78443995 is an apocalyptic number.

78443995 is a deficient number, since it is larger than the sum of its proper divisors (30655013).

78443995 is a wasteful number, since it uses less digits than its factorization.

78443995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31650.

The product of its digits is 1088640, while the sum is 49.

The square root of 78443995 is about 8856.8614644241. The cubic root of 78443995 is about 428.0750352474.

The spelling of 78443995 in words is "seventy-eight million, four hundred forty-three thousand, nine hundred ninety-five".