3945472 has 22 divisors (see below), whose sum is σ = 7889138. Its totient is φ = 1972224.

The previous prime is 3945467. The next prime is 3945527. The reversal of 3945472 is 2745493.

It can be written as a sum of positive squares in only one way, i.e., 3936256 + 9216 = 1984^2 + 96^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 903 + ... + 2950.

Almost surely, 2^3945472 is an apocalyptic number.

3945472 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3945472 is a deficient number, since it is larger than the sum of its proper divisors (3943666).

3945472 is an equidigital number, since it uses as much as digits as its factorization.

3945472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3873 (or 3855 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 3945472 is about 1986.3212227633. The cubic root of 3945472 is about 158.0154874526.

The spelling of 3945472 in words is "three million, nine hundred forty-five thousand, four hundred seventy-two".