3945897 has 12 divisors (see below), whose sum is σ = 5883904. Its totient is φ = 2545560.

The previous prime is 3945883. The next prime is 3945913. The reversal of 3945897 is 7985493.

It is not a de Polignac number, because 3945897 - 2¹⁰ = 3944873 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3947897) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6793 + ... + 7350.

Almost surely, 2^3945897 is an apocalyptic number.

It is an amenable number.

3945897 is a deficient number, since it is larger than the sum of its proper divisors (1938007).

3945897 is a wasteful number, since it uses less digits than its factorization.

3945897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14180 (or 14177 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 3945897 is about 1986.4282015719. The cubic root of 3945897 is about 158.0211609750.

The spelling of 3945897 in words is "three million, nine hundred forty-five thousand, eight hundred ninety-seven".