20043199 has 4 divisors (see below), whose sum is σ = 21865320. Its totient is φ = 18221080.

The previous prime is 20043181. The next prime is 20043211. The reversal of 20043199 is 99134002.

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 20043199 - 2⁷ = 20043071 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 (20043599) 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, 911044 + ... + 911065.

It is an arithmetic number, because the mean of its divisors is an integer number (5466330).

Almost surely, 2^20043199 is an apocalyptic number.

20043199 is a deficient number, since it is larger than the sum of its proper divisors (1822121).

20043199 is a wasteful number, since it uses less digits than its factorization.

20043199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822120.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 20043199 is about 4476.9631448114. The cubic root of 20043199 is about 271.6370546636.

The spelling of 20043199 in words is "twenty million, forty-three thousand, one hundred ninety-nine".