20411199 has 6 divisors (see below), whose sum is σ = 29482856. Its totient is φ = 13607460.

The previous prime is 20411147. The next prime is 20411221. The reversal of 20411199 is 99111402.

It is not a de Polignac number, because 20411199 - 2¹² = 20407103 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 (20411129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1133947 + ... + 1133964.

Almost surely, 2^20411199 is an apocalyptic number.

20411199 is a deficient number, since it is larger than the sum of its proper divisors (9071657).

20411199 is a wasteful number, since it uses less digits than its factorization.

20411199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2267917 (or 2267914 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 20411199 is about 4517.8754962925. The cubic root of 20411199 is about 273.2894326017.

It can be divided in two parts, 2041 and 1199, that added together give a triangular number (3240 = T₈₀).

The spelling of 20411199 in words is "twenty million, four hundred eleven thousand, one hundred ninety-nine".