21469027 has 2 divisors, whose sum is σ = 21469028. Its totient is φ = 21469026.

The previous prime is 21469001. The next prime is 21469033. The reversal of 21469027 is 72096412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21469027 - 2⁷ = 21468899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21469027.

It is not a weakly prime, because it can be changed into another prime (21469057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10734513 + 10734514.

It is an arithmetic number, because the mean of its divisors is an integer number (10734514).

Almost surely, 2^21469027 is an apocalyptic number.

21469027 is a deficient number, since it is larger than the sum of its proper divisors (1).

21469027 is an equidigital number, since it uses as much as digits as its factorization.

21469027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 21469027 is about 4633.4681395257. The cubic root of 21469027 is about 277.9312969642.

The spelling of 21469027 in words is "twenty-one million, four hundred sixty-nine thousand, twenty-seven".