788478659 has 4 divisors (see below), whose sum is σ = 806815416. Its totient is φ = 770141904.

The previous prime is 788478637. The next prime is 788478661. The reversal of 788478659 is 956874887.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 956874887 = 10477 ⋅91331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-788478659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (788478629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9168314 + ... + 9168399.

It is an arithmetic number, because the mean of its divisors is an integer number (201703854).

Almost surely, 2^788478659 is an apocalyptic number.

788478659 is a deficient number, since it is larger than the sum of its proper divisors (18336757).

788478659 is a wasteful number, since it uses less digits than its factorization.

788478659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18336756.

The product of its digits is 27095040, while the sum is 62.

The square root of 788478659 is about 28079.8621613426. The cubic root of 788478659 is about 923.8397564954.

The spelling of 788478659 in words is "seven hundred eighty-eight million, four hundred seventy-eight thousand, six hundred fifty-nine".