78789464 has 32 divisors (see below), whose sum is σ = 159715920. Its totient is φ = 36222336.

The previous prime is 78789449. The next prime is 78789497. The reversal of 78789464 is 46498787.

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, 28094 + ... + 30770.

Almost surely, 2^78789464 is an apocalyptic number.

It is an amenable number.

78789464 is an abundant number, since it is smaller than the sum of its proper divisors (80926456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78789464 is a wasteful number, since it uses less digits than its factorization.

78789464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979 (or 2975 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 53.

The square root of 78789464 is about 8876.3429406485. The cubic root of 78789464 is about 428.7025321231.

The spelling of 78789464 in words is "seventy-eight million, seven hundred eighty-nine thousand, four hundred sixty-four".