21484049 has 8 divisors (see below), whose sum is σ = 21840000. Its totient is φ = 21131136.

The previous prime is 21484033. The next prime is 21484061. The reversal of 21484049 is 94048412.

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 21484049 - 2⁴ = 21484033 is a prime.

It is a super-2 number, since 2×21484049² = 923128722868802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21484069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16577 + ... + 17825.

It is an arithmetic number, because the mean of its divisors is an integer number (2730000).

Almost surely, 2^21484049 is an apocalyptic number.

It is an amenable number.

21484049 is a deficient number, since it is larger than the sum of its proper divisors (355951).

21484049 is a wasteful number, since it uses less digits than its factorization.

21484049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 21484049 is about 4635.0888880366. The cubic root of 21484049 is about 277.9961052195.

The spelling of 21484049 in words is "twenty-one million, four hundred eighty-four thousand, forty-nine".