3889534380049 has 4 divisors (see below), whose sum is σ = 3962921821236. Its totient is φ = 3816146938864.

The previous prime is 3889534380041. The next prime is 3889534380169. The reversal of 3889534380049 is 9400834359883.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2591996961024 + 1297537419025 = 1609968^2 + 1139095^2 .

It is a cyclic number.

It is not a de Polignac number, because 3889534380049 - 2³ = 3889534380041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3889534380041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36693720514 + ... + 36693720619.

It is an arithmetic number, because the mean of its divisors is an integer number (990730455309).

Almost surely, 2^{3889534380049} is an apocalyptic number.

It is an amenable number.

3889534380049 is a deficient number, since it is larger than the sum of its proper divisors (73387441187).

3889534380049 is an equidigital number, since it uses as much as digits as its factorization.

3889534380049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73387441186.

The product of its (nonzero) digits is 89579520, while the sum is 64.

The spelling of 3889534380049 in words is "three trillion, eight hundred eighty-nine billion, five hundred thirty-four million, three hundred eighty thousand, forty-nine".