3945850 has 24 divisors (see below), whose sum is σ = 7482780. Its totient is φ = 1547520.

The previous prime is 3945841. The next prime is 3945883. The reversal of 3945850 is 585493.

It can be written as a sum of positive squares in 6 ways, for example, as 1279161 + 2666689 = 1131^2 + 1633^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1906 + ... + 3394.

Almost surely, 2^3945850 is an apocalyptic number.

3945850 is a deficient number, since it is larger than the sum of its proper divisors (3536930).

3945850 is a wasteful number, since it uses less digits than its factorization.

3945850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554 (or 1549 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 3945850 is about 1986.4163712575. The cubic root of 3945850 is about 158.0205335702.

The spelling of 3945850 in words is "three million, nine hundred forty-five thousand, eight hundred fifty".