21114459 has 32 divisors (see below), whose sum is σ = 33445440. Its totient is φ = 13118976.

The previous prime is 21114451. The next prime is 21114461. The reversal of 21114459 is 95441112.

21114459 is a `hidden beast` number, since 211 + 1 + 445 + 9 = 666.

It is not a de Polignac number, because 21114459 - 2³ = 21114451 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (21114451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71917 + ... + 72209.

It is an arithmetic number, because the mean of its divisors is an integer number (1045170).

Almost surely, 2^21114459 is an apocalyptic number.

21114459 is a deficient number, since it is larger than the sum of its proper divisors (12330981).

21114459 is a wasteful number, since it uses less digits than its factorization.

21114459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 470 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 21114459 is about 4595.0472250022. The cubic root of 21114459 is about 276.3927536927.

The spelling of 21114459 in words is "twenty-one million, one hundred fourteen thousand, four hundred fifty-nine".