3986057811 has 4 divisors (see below), whose sum is σ = 5314743752. Its totient is φ = 2657371872.

The previous prime is 3986057807. The next prime is 3986057833. The reversal of 3986057811 is 1187506893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1187506893 = 3 ⋅395835631.

It is not a de Polignac number, because 3986057811 - 2² = 3986057807 is a prime.

It is a super-2 number, since 2×3986057811² = 31777313745268223442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3986057111) 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, 664342966 + ... + 664342971.

It is an arithmetic number, because the mean of its divisors is an integer number (1328685938).

Almost surely, 2^3986057811 is an apocalyptic number.

3986057811 is a deficient number, since it is larger than the sum of its proper divisors (1328685941).

3986057811 is a wasteful number, since it uses less digits than its factorization.

3986057811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328685940.

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 3986057811 is about 63135.2343070017. The cubic root of 3986057811 is about 1585.5545845300.

The spelling of 3986057811 in words is "three billion, nine hundred eighty-six million, fifty-seven thousand, eight hundred eleven".