214421969 has 8 divisors (see below), whose sum is σ = 234864360. Its totient is φ = 194849536.

The previous prime is 214421959. The next prime is 214421971. The reversal of 214421969 is 969124412.

It can be written as a sum of positive squares in 4 ways, for example, as 86731969 + 127690000 = 9313^2 + 11300^2 .

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 214421969 - 2⁴ = 214421953 is a prime.

It is a super-2 number, since 2×214421969² = 91953561579673922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214421929) 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, 216974 + ... + 217959.

It is an arithmetic number, because the mean of its divisors is an integer number (29358045).

Almost surely, 2^214421969 is an apocalyptic number.

214421969 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

214421969 is a deficient number, since it is larger than the sum of its proper divisors (20442391).

214421969 is a wasteful number, since it uses less digits than its factorization.

214421969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434979.

The product of its digits is 31104, while the sum is 38.

The square root of 214421969 is about 14643.1543391443. The cubic root of 214421969 is about 598.5352874567.

The spelling of 214421969 in words is "two hundred fourteen million, four hundred twenty-one thousand, nine hundred sixty-nine".