21414169 has 8 divisors (see below), whose sum is σ = 25913088. Its totient is φ = 17275200.

The previous prime is 21414119. The next prime is 21414193. The reversal of 21414169 is 96141412.

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 21414169 - 2¹⁹ = 20889881 is a prime.

It is a super-2 number, since 2×21414169² = 917133267921122, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21414119) 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, 89857 + ... + 90094.

It is an arithmetic number, because the mean of its divisors is an integer number (3239136).

It is a Poulet number, since it divides 2^21414168-1.

Almost surely, 2^21414169 is an apocalyptic number.

It is an amenable number.

21414169 is a deficient number, since it is larger than the sum of its proper divisors (4498919).

21414169 is a wasteful number, since it uses less digits than its factorization.

21414169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179975.

The product of its digits is 1728, while the sum is 28.

The square root of 21414169 is about 4627.5445973000. The cubic root of 21414169 is about 277.6943702231.

The spelling of 21414169 in words is "twenty-one million, four hundred fourteen thousand, one hundred sixty-nine".