78944455 has 8 divisors (see below), whose sum is σ = 95058432. Its totient is φ = 62938848.

The previous prime is 78944429. The next prime is 78944477. The reversal of 78944455 is 55444987.

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 78944455 - 2²³ = 70555847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 25479 + ... + 28408.

It is an arithmetic number, because the mean of its divisors is an integer number (11882304).

Almost surely, 2^78944455 is an apocalyptic number.

78944455 is a deficient number, since it is larger than the sum of its proper divisors (16113977).

78944455 is a wasteful number, since it uses less digits than its factorization.

78944455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54185.

The product of its digits is 806400, while the sum is 46.

The square root of 78944455 is about 8885.0692175132. The cubic root of 78944455 is about 428.9834559469.

The spelling of 78944455 in words is "seventy-eight million, nine hundred forty-four thousand, four hundred fifty-five".