209303902039 has 2 divisors, whose sum is σ = 209303902040. Its totient is φ = 209303902038.

The previous prime is 209303902033. The next prime is 209303902043. The reversal of 209303902039 is 930209303902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 209303902039 - 2³⁵ = 174944163671 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 209303901992 and 209303902010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (209303902033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104651951019 + 104651951020.

It is an arithmetic number, because the mean of its divisors is an integer number (104651951020).

Almost surely, 2^209303902039 is an apocalyptic number.

209303902039 is a deficient number, since it is larger than the sum of its proper divisors (1).

209303902039 is an equidigital number, since it uses as much as digits as its factorization.

209303902039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78732, while the sum is 40.

The spelling of 209303902039 in words is "two hundred nine billion, three hundred three million, nine hundred two thousand, thirty-nine".