78794403 has 4 divisors (see below), whose sum is σ = 105059208. Its totient is φ = 52529600.

The previous prime is 78794399. The next prime is 78794431. The reversal of 78794403 is 30449787.

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 78794403 - 2² = 78794399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78794203) 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 3 ways as a sum of consecutive naturals, for example, 13132398 + ... + 13132403.

It is an arithmetic number, because the mean of its divisors is an integer number (26264802).

Almost surely, 2^78794403 is an apocalyptic number.

78794403 is a deficient number, since it is larger than the sum of its proper divisors (26264805).

78794403 is a wasteful number, since it uses less digits than its factorization.

78794403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26264804.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 78794403 is about 8876.6211477116. The cubic root of 78794403 is about 428.7114898248.

It can be divided in two parts, 78794 and 403, that added together give a palindrome (79197).

The spelling of 78794403 in words is "seventy-eight million, seven hundred ninety-four thousand, four hundred three".