3878417747 has 4 divisors (see below), whose sum is σ = 4012156320. Its totient is φ = 3744679176.

The previous prime is 3878417717. The next prime is 3878417749. The reversal of 3878417747 is 7477148783.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3878417747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3878417692 and 3878417701.

It is not an unprimeable number, because it can be changed into a prime (3878417749) 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, 66869243 + ... + 66869300.

It is an arithmetic number, because the mean of its divisors is an integer number (1003039080).

Almost surely, 2^3878417747 is an apocalyptic number.

3878417747 is a deficient number, since it is larger than the sum of its proper divisors (133738573).

3878417747 is a wasteful number, since it uses less digits than its factorization.

3878417747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133738572.

The product of its digits is 7375872, while the sum is 56.

The square root of 3878417747 is about 62276.9439439669. The cubic root of 3878417747 is about 1571.1519730488.

The spelling of 3878417747 in words is "three billion, eight hundred seventy-eight million, four hundred seventeen thousand, seven hundred forty-seven".