3945207 has 32 divisors (see below), whose sum is σ = 6538752. Its totient is φ = 2064384.

The previous prime is 3945203. The next prime is 3945233. The reversal of 3945207 is 7025493.

It is not a de Polignac number, because 3945207 - 2² = 3945203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3945203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15223 + ... + 15479.

It is an arithmetic number, because the mean of its divisors is an integer number (204336).

Almost surely, 2^3945207 is an apocalyptic number.

3945207 is a deficient number, since it is larger than the sum of its proper divisors (2593545).

3945207 is a wasteful number, since it uses less digits than its factorization.

3945207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 3945207 is about 1986.2545154134. The cubic root of 3945207 is about 158.0119496383.

The spelling of 3945207 in words is "three million, nine hundred forty-five thousand, two hundred seven".