3806947 has 4 divisors (see below), whose sum is σ = 3814776. Its totient is φ = 3799120.

The previous prime is 3806927. The next prime is 3806981. The reversal of 3806947 is 7496083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7496083 = 7 ⋅1070869.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3806947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3806927) 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, 3133 + ... + 4174.

It is an arithmetic number, because the mean of its divisors is an integer number (953694).

Almost surely, 2^3806947 is an apocalyptic number.

3806947 is a deficient number, since it is larger than the sum of its proper divisors (7829).

3806947 is an equidigital number, since it uses as much as digits as its factorization.

3806947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7828.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 3806947 is about 1951.1399232244. The cubic root of 3806947 is about 156.1441112967.

It can be divided in two parts, 3806 and 947, that added together give a triangular number (4753 = T₉₇).

The spelling of 3806947 in words is "three million, eight hundred six thousand, nine hundred forty-seven".