3949824 has 72 divisors (see below), whose sum is σ = 10874080. Its totient is φ = 1271808.

The previous prime is 3949819. The next prime is 3949849. The reversal of 3949824 is 4289493.

It is a super-2 number, since 2×3949824² = 31202219261952, which contains 22 as substring.

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 in 7 ways as a sum of consecutive naturals, for example, 28347 + ... + 28485.

Almost surely, 2^3949824 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3949824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5437040).

3949824 is an abundant number, since it is smaller than the sum of its proper divisors (6924256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3949824 is a wasteful number, since it uses less digits than its factorization.

3949824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 181 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 3949824 is about 1987.4164133367. The cubic root of 3949824 is about 158.0735650590.

The spelling of 3949824 in words is "three million, nine hundred forty-nine thousand, eight hundred twenty-four".