3898623899647 has 2 divisors, whose sum is σ = 3898623899648. Its totient is φ = 3898623899646.

The previous prime is 3898623899593. The next prime is 3898623899657. The reversal of 3898623899647 is 7469983268983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3898623899647 - 2⁷ = 3898623899519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3898623899657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1949311949823 + 1949311949824.

It is an arithmetic number, because the mean of its divisors is an integer number (1949311949824).

Almost surely, 2^{3898623899647} is an apocalyptic number.

3898623899647 is a deficient number, since it is larger than the sum of its proper divisors (1).

3898623899647 is an equidigital number, since it uses as much as digits as its factorization.

3898623899647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6772211712, while the sum is 82.

The spelling of 3898623899647 in words is "three trillion, eight hundred ninety-eight billion, six hundred twenty-three million, eight hundred ninety-nine thousand, six hundred forty-seven".