3857745 has 16 divisors (see below), whose sum is σ = 6316992. Its totient is φ = 2009280.

The previous prime is 3857743. The next prime is 3857747. The reversal of 3857745 is 5477583.

It is an interprime number because it is at equal distance from previous prime (3857743) and next prime (3857747).

It is not a de Polignac number, because 3857745 - 2¹ = 3857743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3857743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2346 + ... + 3635.

It is an arithmetic number, because the mean of its divisors is an integer number (394812).

Almost surely, 2^3857745 is an apocalyptic number.

It is an amenable number.

3857745 is a deficient number, since it is larger than the sum of its proper divisors (2459247).

3857745 is a wasteful number, since it uses less digits than its factorization.

3857745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6032.

The product of its digits is 117600, while the sum is 39.

The square root of 3857745 is about 1964.1143042094. The cubic root of 3857745 is about 156.8355479804.

The spelling of 3857745 in words is "three million, eight hundred fifty-seven thousand, seven hundred forty-five".