20394459 has 12 divisors (see below), whose sum is σ = 29537352. Its totient is φ = 13560000.

The previous prime is 20394449. The next prime is 20394463. The reversal of 20394459 is 95449302.

20394459 is a `hidden beast` number, since 203 + 9 + 445 + 9 = 666.

It is not a de Polignac number, because 20394459 - 2⁴ = 20394443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20394449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 784 + ... + 6434.

It is an arithmetic number, because the mean of its divisors is an integer number (2461446).

Almost surely, 2^20394459 is an apocalyptic number.

20394459 is a deficient number, since it is larger than the sum of its proper divisors (9142893).

20394459 is a wasteful number, since it uses less digits than its factorization.

20394459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6058 (or 6055 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 20394459 is about 4516.0224755862. The cubic root of 20394459 is about 273.2147004845.

The spelling of 20394459 in words is "twenty million, three hundred ninety-four thousand, four hundred fifty-nine".