2103990899 has 2 divisors, whose sum is σ = 2103990900. Its totient is φ = 2103990898.

The previous prime is 2103990871. The next prime is 2103990901. The reversal of 2103990899 is 9980993012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2103990899 - 2⁸ = 2103990643 is a prime.

Together with 2103990901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2103990599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051995449 + 1051995450.

It is an arithmetic number, because the mean of its divisors is an integer number (1051995450).

Almost surely, 2^2103990899 is an apocalyptic number.

2103990899 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103990899 is an equidigital number, since it uses as much as digits as its factorization.

2103990899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 50.

The square root of 2103990899 is about 45869.2805589972. The cubic root of 2103990899 is about 1281.3898678511.

The spelling of 2103990899 in words is "two billion, one hundred three million, nine hundred ninety thousand, eight hundred ninety-nine".