826371421 has 8 divisors (see below), whose sum is σ = 838164600. Its totient is φ = 814645248.

The previous prime is 826371409. The next prime is 826371499. The reversal of 826371421 is 124173628.

826371421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 630763225 + 195608196 = 25115^2 + 13986^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 826371421 - 2¹¹ = 826369373 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 (826375421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8355 + ... + 41503.

It is an arithmetic number, because the mean of its divisors is an integer number (104770575).

Almost surely, 2^826371421 is an apocalyptic number.

It is an amenable number.

826371421 is a deficient number, since it is larger than the sum of its proper divisors (11793179).

826371421 is a wasteful number, since it uses less digits than its factorization.

826371421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33503.

The product of its digits is 16128, while the sum is 34.

The square root of 826371421 is about 28746.6766948807. The cubic root of 826371421 is about 938.4081330315.

The spelling of 826371421 in words is "eight hundred twenty-six million, three hundred seventy-one thousand, four hundred twenty-one".