20412599 has 2 divisors, whose sum is σ = 20412600. Its totient is φ = 20412598.

The previous prime is 20412559. The next prime is 20412647. The reversal of 20412599 is 99521402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20412599 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20412559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206299 + 10206300.

It is an arithmetic number, because the mean of its divisors is an integer number (10206300).

Almost surely, 2^20412599 is an apocalyptic number.

20412599 is a deficient number, since it is larger than the sum of its proper divisors (1).

20412599 is an equidigital number, since it uses as much as digits as its factorization.

20412599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 20412599 is about 4518.0304337178. The cubic root of 20412599 is about 273.2956807478.

The spelling of 20412599 in words is "twenty million, four hundred twelve thousand, five hundred ninety-nine".