788832421 has 16 divisors (see below), whose sum is σ = 860655600. Its totient is φ = 718645248.

The previous prime is 788832389. The next prime is 788832427. The reversal of 788832421 is 124238887.

It can be written as a sum of positive squares in 8 ways, for example, as 61936900 + 726895521 = 7870^2 + 26961^2 .

It is a cyclic number.

It is not a de Polignac number, because 788832421 - 2⁵ = 788832389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (788832427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 641235 + ... + 642463.

It is an arithmetic number, because the mean of its divisors is an integer number (53790975).

Almost surely, 2^788832421 is an apocalyptic number.

It is an amenable number.

788832421 is a deficient number, since it is larger than the sum of its proper divisors (71823179).

788832421 is a wasteful number, since it uses less digits than its factorization.

788832421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848.

The product of its digits is 172032, while the sum is 43.

The square root of 788832421 is about 28086.1606667768. The cubic root of 788832421 is about 923.9779003885.

The spelling of 788832421 in words is "seven hundred eighty-eight million, eight hundred thirty-two thousand, four hundred twenty-one".