214689469 has 4 divisors (see below), whose sum is σ = 215038044. Its totient is φ = 214340896.

The previous prime is 214689457. The next prime is 214689473. The reversal of 214689469 is 964986412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4149369 + 210540100 = 2037^2 + 14510^2 .

It is a cyclic number.

It is not a de Polignac number, because 214689469 - 2⁵ = 214689437 is a prime.

It is a super-2 number, since 2×214689469² = 92183136199003922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214689499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173362 + ... + 174595.

It is an arithmetic number, because the mean of its divisors is an integer number (53759511).

Almost surely, 2^214689469 is an apocalyptic number.

It is an amenable number.

214689469 is a deficient number, since it is larger than the sum of its proper divisors (348575).

214689469 is an equidigital number, since it uses as much as digits as its factorization.

214689469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348574.

The product of its digits is 746496, while the sum is 49.

The square root of 214689469 is about 14652.2854531298. The cubic root of 214689469 is about 598.7840829444.

The spelling of 214689469 in words is "two hundred fourteen million, six hundred eighty-nine thousand, four hundred sixty-nine".