3949829 has 8 divisors (see below), whose sum is σ = 4400760. Its totient is φ = 3519936.

The previous prime is 3949819. The next prime is 3949849. The reversal of 3949829 is 9289493.

It can be written as a sum of positive squares in 4 ways, for example, as 452929 + 3496900 = 673^2 + 1870^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3949829 is a prime.

It is a super-2 number, since 2×3949829² = 31202298258482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3949829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4862 + ... + 5615.

It is an arithmetic number, because the mean of its divisors is an integer number (550095).

Almost surely, 2^3949829 is an apocalyptic number.

It is an amenable number.

3949829 is a deficient number, since it is larger than the sum of its proper divisors (450931).

3949829 is a wasteful number, since it uses less digits than its factorization.

3949829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10519.

The product of its digits is 139968, while the sum is 44.

The square root of 3949829 is about 1987.4176712508. The cubic root of 3949829 is about 158.0736317597.

The spelling of 3949829 in words is "three million, nine hundred forty-nine thousand, eight hundred twenty-nine".