3873945 has 16 divisors (see below), whose sum is σ = 6227712. Its totient is φ = 2056320.

The previous prime is 3873941. The next prime is 3873983. The reversal of 3873945 is 5493783.

It is not a de Polignac number, because 3873945 - 2² = 3873941 is a prime.

It is a Curzon number.

3873945 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3873941) 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, 3589 + ... + 4541.

It is an arithmetic number, because the mean of its divisors is an integer number (389232).

Almost surely, 2^3873945 is an apocalyptic number.

It is an amenable number.

3873945 is a deficient number, since it is larger than the sum of its proper divisors (2353767).

3873945 is a wasteful number, since it uses less digits than its factorization.

3873945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232.

The product of its digits is 90720, while the sum is 39.

The square root of 3873945 is about 1968.2339799932. The cubic root of 3873945 is about 157.0547768888.

The spelling of 3873945 in words is "three million, eight hundred seventy-three thousand, nine hundred forty-five".