3945738 has 16 divisors (see below), whose sum is σ = 7914240. Its totient is φ = 1311456.

The previous prime is 3945731. The next prime is 3945757. The reversal of 3945738 is 8375493.

It is a junction number, because it is equal to n+sod(n) for n = 3945696 and 3945705.

It is not an unprimeable number, because it can be changed into a prime (3945731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2023 + ... + 3461.

It is an arithmetic number, because the mean of its divisors is an integer number (494640).

Almost surely, 2^3945738 is an apocalyptic number.

3945738 is an abundant number, since it is smaller than the sum of its proper divisors (3968502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3945738 is a wasteful number, since it uses less digits than its factorization.

3945738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901.

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

The square root of 3945738 is about 1986.3881795863. The cubic root of 3945738 is about 158.0190384579.

The spelling of 3945738 in words is "three million, nine hundred forty-five thousand, seven hundred thirty-eight".