3857704747 has 4 divisors (see below), whose sum is σ = 4154451280. Its totient is φ = 3560958216.

The previous prime is 3857704723. The next prime is 3857704757. The reversal of 3857704747 is 7474077583.

It is a happy number.

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-3857704747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3857704694 and 3857704703.

It is not an unprimeable number, because it can be changed into a prime (3857704757) 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, 148373247 + ... + 148373272.

It is an arithmetic number, because the mean of its divisors is an integer number (1038612820).

Almost surely, 2^3857704747 is an apocalyptic number.

3857704747 is a deficient number, since it is larger than the sum of its proper divisors (296746533).

3857704747 is a wasteful number, since it uses less digits than its factorization.

3857704747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296746532.

The product of its (nonzero) digits is 4609920, while the sum is 52.

The square root of 3857704747 is about 62110.4238191948. The cubic root of 3857704747 is about 1568.3500248696.

The spelling of 3857704747 in words is "three billion, eight hundred fifty-seven million, seven hundred four thousand, seven hundred forty-seven".