20838800399 has 2 divisors, whose sum is σ = 20838800400. Its totient is φ = 20838800398.

The previous prime is 20838800383. The next prime is 20838800443. The reversal of 20838800399 is 99300883802.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20838800399 - 2⁴ = 20838800383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20838800369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10419400199 + 10419400200.

It is an arithmetic number, because the mean of its divisors is an integer number (10419400200).

Almost surely, 2^20838800399 is an apocalyptic number.

20838800399 is a deficient number, since it is larger than the sum of its proper divisors (1).

20838800399 is an equidigital number, since it uses as much as digits as its factorization.

20838800399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 20838800399 in words is "twenty billion, eight hundred thirty-eight million, eight hundred thousand, three hundred ninety-nine".