20894099 has 2 divisors, whose sum is σ = 20894100. Its totient is φ = 20894098.

The previous prime is 20894089. The next prime is 20894119. The reversal of 20894099 is 99049802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20894099 - 2²⁰ = 19845523 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20894009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10447049 + 10447050.

It is an arithmetic number, because the mean of its divisors is an integer number (10447050).

Almost surely, 2^20894099 is an apocalyptic number.

20894099 is a deficient number, since it is larger than the sum of its proper divisors (1).

20894099 is an equidigital number, since it uses as much as digits as its factorization.

20894099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 20894099 is about 4571.0063443404. The cubic root of 20894099 is about 275.4278694745.

The spelling of 20894099 in words is "twenty million, eight hundred ninety-four thousand, ninety-nine".