20413199 has 2 divisors, whose sum is σ = 20413200. Its totient is φ = 20413198.

The previous prime is 20413177. The next prime is 20413219. The reversal of 20413199 is 99131402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20413199 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20413399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206599 + 10206600.

It is an arithmetic number, because the mean of its divisors is an integer number (10206600).

Almost surely, 2^20413199 is an apocalyptic number.

20413199 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413199 is an equidigital number, since it uses as much as digits as its factorization.

20413199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 20413199 is about 4518.0968338450. The cubic root of 20413199 is about 273.2983584372.

The spelling of 20413199 in words is "twenty million, four hundred thirteen thousand, one hundred ninety-nine".