20412089 has 2 divisors, whose sum is σ = 20412090. Its totient is φ = 20412088.

The previous prime is 20412083. The next prime is 20412101. The reversal of 20412089 is 98021402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17572864 + 2839225 = 4192^2 + 1685^2 .

It is a cyclic number.

It is not a de Polignac number, because 20412089 - 2¹² = 20407993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20412083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206044 + 10206045.

It is an arithmetic number, because the mean of its divisors is an integer number (10206045).

Almost surely, 2^20412089 is an apocalyptic number.

It is an amenable number.

20412089 is a deficient number, since it is larger than the sum of its proper divisors (1).

20412089 is an equidigital number, since it uses as much as digits as its factorization.

20412089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 20412089 is about 4517.9739928424. The cubic root of 20412089 is about 273.2934046705.

The spelling of 20412089 in words is "twenty million, four hundred twelve thousand, eighty-nine".