738896821 has 16 divisors (see below), whose sum is σ = 822695104. Its totient is φ = 659280384.

The previous prime is 738896803. The next prime is 738896831. The reversal of 738896821 is 128698837.

738896821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 738896821 - 2¹⁹ = 738372533 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 (738896801) 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, 47410 + ... + 61036.

It is an arithmetic number, because the mean of its divisors is an integer number (51418444).

Almost surely, 2^738896821 is an apocalyptic number.

It is an amenable number.

738896821 is a deficient number, since it is larger than the sum of its proper divisors (83798283).

738896821 is a wasteful number, since it uses less digits than its factorization.

738896821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13780.

The product of its digits is 1161216, while the sum is 52.

The square root of 738896821 is about 27182.6566214563. The cubic root of 738896821 is about 904.0544731350.

The spelling of 738896821 in words is "seven hundred thirty-eight million, eight hundred ninety-six thousand, eight hundred twenty-one".