20434199 has 4 divisors (see below), whose sum is σ = 20487936. Its totient is φ = 20380464.

The previous prime is 20434181. The next prime is 20434223. The reversal of 20434199 is 99143402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20434199 - 2⁸ = 20433943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26294 + ... + 27059.

It is an arithmetic number, because the mean of its divisors is an integer number (5121984).

Almost surely, 2^20434199 is an apocalyptic number.

20434199 is a deficient number, since it is larger than the sum of its proper divisors (53737).

20434199 is an equidigital number, since it uses as much as digits as its factorization.

20434199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53736.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 20434199 is about 4520.4202238288. The cubic root of 20434199 is about 273.3920445300.

The spelling of 20434199 in words is "twenty million, four hundred thirty-four thousand, one hundred ninety-nine".