3898437006869 has 2 divisors, whose sum is σ = 3898437006870. Its totient is φ = 3898437006868.

The previous prime is 3898437006833. The next prime is 3898437006899. The reversal of 3898437006869 is 9686007348983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2038655674225 + 1859781332644 = 1427815^2 + 1363738^2 .

It is a cyclic number.

It is not a de Polignac number, because 3898437006869 - 2¹² = 3898437002773 is a prime.

It is a super-2 number, since 2×3898437006869² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3898437006809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1949218503434 + 1949218503435.

It is an arithmetic number, because the mean of its divisors is an integer number (1949218503435).

Almost surely, 2^{3898437006869} is an apocalyptic number.

It is an amenable number.

3898437006869 is a deficient number, since it is larger than the sum of its proper divisors (1).

3898437006869 is an equidigital number, since it uses as much as digits as its factorization.

3898437006869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 376233984, while the sum is 71.

The spelling of 3898437006869 in words is "three trillion, eight hundred ninety-eight billion, four hundred thirty-seven million, six thousand, eight hundred sixty-nine".