3889371449 has 2 divisors, whose sum is σ = 3889371450. Its totient is φ = 3889371448.

The previous prime is 3889371413. The next prime is 3889371523. The reversal of 3889371449 is 9441739883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3390965824 + 498405625 = 58232^2 + 22325^2 .

It is a cyclic number.

It is not a de Polignac number, because 3889371449 - 2²⁸ = 3620935993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3889371394 and 3889371403.

It is not a weakly prime, because it can be changed into another prime (3889371149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1944685724 + 1944685725.

It is an arithmetic number, because the mean of its divisors is an integer number (1944685725).

Almost surely, 2^3889371449 is an apocalyptic number.

It is an amenable number.

3889371449 is a deficient number, since it is larger than the sum of its proper divisors (1).

3889371449 is an equidigital number, since it uses as much as digits as its factorization.

3889371449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 56.

The square root of 3889371449 is about 62364.8254146518. The cubic root of 3889371449 is about 1572.6297022990.

The spelling of 3889371449 in words is "three billion, eight hundred eighty-nine million, three hundred seventy-one thousand, four hundred forty-nine".