21484369 has 8 divisors (see below), whose sum is σ = 22966272. Its totient is φ = 20048160.

The previous prime is 21484363. The next prime is 21484399. The reversal of 21484369 is 96348412.

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 21484369 - 2⁷ = 21484241 is a prime.

It is a super-2 number, since 2×21484369² = 923156222656322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21484363) 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, 10449 + ... + 12334.

It is an arithmetic number, because the mean of its divisors is an integer number (2870784).

Almost surely, 2^21484369 is an apocalyptic number.

It is an amenable number.

21484369 is a deficient number, since it is larger than the sum of its proper divisors (1481903).

21484369 is a wasteful number, since it uses less digits than its factorization.

21484369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22847.

The product of its digits is 41472, while the sum is 37.

The square root of 21484369 is about 4635.1234072029. The cubic root of 21484369 is about 277.9974854421.

The spelling of 21484369 in words is "twenty-one million, four hundred eighty-four thousand, three hundred sixty-nine".