20432099 has 2 divisors, whose sum is σ = 20432100. Its totient is φ = 20432098.

The previous prime is 20432081. The next prime is 20432101. The reversal of 20432099 is 99023402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20432099 - 2¹² = 20428003 is a prime.

It is a Sophie Germain prime.

Together with 20432101, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20432039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10216049 + 10216050.

It is an arithmetic number, because the mean of its divisors is an integer number (10216050).

Almost surely, 2^20432099 is an apocalyptic number.

20432099 is a deficient number, since it is larger than the sum of its proper divisors (1).

20432099 is an equidigital number, since it uses as much as digits as its factorization.

20432099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 20432099 is about 4520.1879385707. The cubic root of 20432099 is about 273.3826788100.

The spelling of 20432099 in words is "twenty million, four hundred thirty-two thousand, ninety-nine".