3909790490899 has 2 divisors, whose sum is σ = 3909790490900. Its totient is φ = 3909790490898.

The previous prime is 3909790490897. The next prime is 3909790490933. The reversal of 3909790490899 is 9980940979093.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3909790490899 - 2¹ = 3909790490897 is a prime.

Together with 3909790490897, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3909790490897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1954895245449 + 1954895245450.

It is an arithmetic number, because the mean of its divisors is an integer number (1954895245450).

Almost surely, 2^{3909790490899} is an apocalyptic number.

3909790490899 is a deficient number, since it is larger than the sum of its proper divisors (1).

3909790490899 is an equidigital number, since it uses as much as digits as its factorization.

3909790490899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 357128352, while the sum is 76.

The spelling of 3909790490899 in words is "three trillion, nine hundred nine billion, seven hundred ninety million, four hundred ninety thousand, eight hundred ninety-nine".