21414719 has 2 divisors, whose sum is σ = 21414720. Its totient is φ = 21414718.

The previous prime is 21414697. The next prime is 21414733. The reversal of 21414719 is 91741412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21414719 - 2¹⁶ = 21349183 is a prime.

It is a super-2 number, since 2×21414719² = 917180379697922, which contains 22 as substring.

It is a Chen prime.

It is equal to p_1354529 and since 21414719 and 1354529 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 21414691 and 21414700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21414739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10707359 + 10707360.

It is an arithmetic number, because the mean of its divisors is an integer number (10707360).

Almost surely, 2^21414719 is an apocalyptic number.

21414719 is a deficient number, since it is larger than the sum of its proper divisors (1).

21414719 is an equidigital number, since it uses as much as digits as its factorization.

21414719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 29.

The square root of 21414719 is about 4627.6040236822. The cubic root of 21414719 is about 277.6967476303.

The spelling of 21414719 in words is "twenty-one million, four hundred fourteen thousand, seven hundred nineteen".