3927945 has 16 divisors (see below), whose sum is σ = 7182720. Its totient is φ = 1795584.

The previous prime is 3927943. The next prime is 3927961. The reversal of 3927945 is 5497293.

It is not a de Polignac number, because 3927945 - 2¹ = 3927943 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3927941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18600 + ... + 18809.

It is an arithmetic number, because the mean of its divisors is an integer number (448920).

Almost surely, 2^3927945 is an apocalyptic number.

3927945 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3927945 is a deficient number, since it is larger than the sum of its proper divisors (3254775).

3927945 is a wasteful number, since it uses less digits than its factorization.

3927945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37424.

The product of its digits is 68040, while the sum is 39.

The square root of 3927945 is about 1981.9043871993. The cubic root of 3927945 is about 157.7811556544.

The spelling of 3927945 in words is "three million, nine hundred twenty-seven thousand, nine hundred forty-five".