3912889109 has 2 divisors, whose sum is σ = 3912889110. Its totient is φ = 3912889108.

The previous prime is 3912889091. The next prime is 3912889117. The reversal of 3912889109 is 9019882193.

It is a happy number.

Together with previous prime (3912889091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3771802225 + 141086884 = 61415^2 + 11878^2 .

It is a cyclic number.

It is not a de Polignac number, because 3912889109 - 2²⁰ = 3911840533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3912889159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1956444554 + 1956444555.

It is an arithmetic number, because the mean of its divisors is an integer number (1956444555).

Almost surely, 2^3912889109 is an apocalyptic number.

It is an amenable number.

3912889109 is a deficient number, since it is larger than the sum of its proper divisors (1).

3912889109 is an equidigital number, since it uses as much as digits as its factorization.

3912889109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 50.

The square root of 3912889109 is about 62553.0903233405. The cubic root of 3912889109 is about 1575.7930476973.

The spelling of 3912889109 in words is "three billion, nine hundred twelve million, eight hundred eighty-nine thousand, one hundred nine".