21414693 has 8 divisors (see below), whose sum is σ = 28575648. Its totient is φ = 14265104.

The previous prime is 21414689. The next prime is 21414697. The reversal of 21414693 is 39641412.

It is an interprime number because it is at equal distance from previous prime (21414689) and next prime (21414697).

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 21414693 - 2² = 21414689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21414693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21414697) 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, 3730 + ... + 7532.

It is an arithmetic number, because the mean of its divisors is an integer number (3571956).

Almost surely, 2^21414693 is an apocalyptic number.

It is an amenable number.

21414693 is a deficient number, since it is larger than the sum of its proper divisors (7160955).

21414693 is a wasteful number, since it uses less digits than its factorization.

21414693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5683.

The product of its digits is 5184, while the sum is 30.

The square root of 21414693 is about 4627.6012144523. The cubic root of 21414693 is about 277.6966352447.

The spelling of 21414693 in words is "twenty-one million, four hundred fourteen thousand, six hundred ninety-three".