21394341 has 8 divisors (see below), whose sum is σ = 31695360. Its totient is φ = 14262876.

The previous prime is 21394339. The next prime is 21394357. The reversal of 21394341 is 14349312.

It is not a de Polignac number, because 21394341 - 2¹ = 21394339 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 792383 = 21394341 / (2 + 1 + 3 + 9 + 4 + 3 + 4 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21398341) by changing a digit.

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, 396165 + ... + 396218.

It is an arithmetic number, because the mean of its divisors is an integer number (3961920).

Almost surely, 2^21394341 is an apocalyptic number.

It is an amenable number.

21394341 is a deficient number, since it is larger than the sum of its proper divisors (10301019).

21394341 is an equidigital number, since it uses as much as digits as its factorization.

21394341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792392 (or 792386 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 21394341 is about 4625.4017122840. The cubic root of 21394341 is about 277.6086353331.

The spelling of 21394341 in words is "twenty-one million, three hundred ninety-four thousand, three hundred forty-one".