3945249 has 24 divisors (see below), whose sum is σ = 7106112. Its totient is φ = 2049120.

The previous prime is 3945233. The next prime is 3945287. The reversal of 3945249 is 9425493.

It is not a de Polignac number, because 3945249 - 2⁴ = 3945233 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3945299) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2154 + ... + 3539.

It is an arithmetic number, because the mean of its divisors is an integer number (296088).

Almost surely, 2^3945249 is an apocalyptic number.

It is an amenable number.

3945249 is a deficient number, since it is larger than the sum of its proper divisors (3160863).

3945249 is a wasteful number, since it uses less digits than its factorization.

3945249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5717 (or 5714 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 3945249 is about 1986.2650880484. The cubic root of 3945249 is about 158.0125103591.

The spelling of 3945249 in words is "three million, nine hundred forty-five thousand, two hundred forty-nine".